Investigating the effect of temperature on the rate of osmosis. They do however, contain chlorophyll which give them the ability to perform photosynthesis; they use sunlight to convert carbon dioxide and water into energy and oxygen. Temperature increases the reaction rate by increasing the number of collisions and making more forceful collisions. The optimal temperature for the fastest rate of photosynthesis will fall between 2°C and 75°C, and more towards the 24°C water. In this virtual photosynthesis lab, students can manipulate the light intensity, light color, and distance from the light source. a modification was made to the original experiment to determine the effect of. (the plant has to spend time waiting for more CO2 to arrive). Hypothesis: When the temperature is higher the rate of reaction would be faster, to a certain extent and when the temperature is lower the rate of reaction will be slower. The aim of this work is. Uploaded May 4, 2021. LED lamps produce less heat. As the temperature goes beyond the optimum temperature of the enzyme, the rate of reaction decreases. a modification was made to the original experiment to determine the effect of temperature on the. (the plant has to spend time waiting for more CO2 to arrive). See our example GCSE Essay on The Effect of Temperature on the Rate of Photosynthesis. Observe: Set Temperature to 24°C, Light intensity to 50%, and CO 2 level to 200 ppm. A great experiment to investigate the effect of temperature on the rate of photosynthesis could involve using a plant such as spinach leaves. Factors that affect the Rate of Photosynthesis. At temperatures above 40°C the rate slows down. Jinguan 5) at fruit stage, an experiment was carried out in climate chambers. At least, that is, up until 25 degrees Celsius. Novel correction routines were developed for in vitro data to remove the. The exogenous application of chitosan (CTS) has gained extensive interests due to its effect on improving drought resistance. Here we tested several irradiance fluctuations. Investigating the effect of temperature on the rate of osmosis. Increasing the concentration of CO2 increases the rate of photosynthesis. They include deep, bright reds to rich blues and purples. During the summer months (VII-VIII), the mean temperature exceeded 20 °C ( Table 1 ). % Cu and Mg-5 wt. In photosynthesis, a lot of enzymes need to work to fulfill the requirement of energy. At the optimum temperature. So the molecules start moving at a higher speed and collide faster, increasing the rate of photosynthesis. Other factors include; water, temperature, and carbon. 6) + oxygen. This research aimed to determine the role of exogenous CTS on annual ryegrass in response to water stress. This is because reactions occur when the plant enzymes collide and . You can develop more accurate measures by collecting the gas produced and measuring the volume of gas produced each minute (or over longer time periods). Temperature and Photosynthesis: How Does Temperature Affect the Rate of Photosynthesis in Plants? Introduction All the colors that our eyes can see can be found in plants that live in the world. Five day/night temperature regimes (16/34, 19/31, 25/25, 31/19, and 34/16°C) with respective DIFs of -18, -12, 0, +12,. IntroductionElodea is native to North America and is naturalized in Australia, Asia and Europe. The pH Scale & Meter Calibration Experience the pH Scale and Meter Calibration Virtual Lab first to fully understand the Testing and Adjusting pH Virtual Lab. Warm-Up: 1. They do however, contain chlorophyll which give them the ability to perform photosynthesis; they use sunlight to convert carbon dioxide and water into energy and oxygen. The experiment concluded that the rate of photosynthesis, measured using percentage change in dissolved oxygen concentration, increases steadily alongside the increase of CO 2. However, for photosynthesis at temperatures above 40°C the rate slows down. Investigations to determine the effects of light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis can be carried out using aquatic plants, such as Elodea or Cabomba (types of pondweed) The effect of these limiting factors on the rate of photosynthesis can be investigated in the following ways:. 6 Global Change and Photosynthesis Research Unit, United States Department of Agriculture. Correct answers: 1 question: St students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. A controlled experiment is a highly focused way of collecting data and is especially useful for determining patterns of cause and effect. Photosynthesis takes place inside chloroplasts found in plants and algae. In the second experiment, 8 light intensities (0, 20, 40, 80, 160, 320, 640, and 1500 μmol photons m −2 s −1). Experiment with the verticalTemperature slider (upper left). To be able to do this I need a detailed background knowledge of the process of photosynthesis. Write a problem question to test effect of temperature. Plants use 400- to. At low temperatures (5oC-15oC) the rate of photosynthesis will be slow, as the enzymes of the plant do not have enough energy to meet substrate molecules. Rate of Photosynthesis Bioenergetics Investigating Photosynthesis Biological Molecules ATP Carbohydrates Condensation Reaction DNA and RNA DNA replication Denaturation Enzymes Factors Affecting Enzyme Activity Fatty Acids Hydrolysis Reaction Inorganic Ions Lipids Measuring enzyme-controlled reactions Monomers Monomers and Polymers Monosaccharides. Comments and Help with organization homeostasis worksheet. There was a downward trend in the photosynthesis among the treatments, as evidenced by the lowest net photosynthetic rate and total chlorophyll at a DIF of 15 °C. Relatively high temperatures were recorded during the two years of the experiment. Temperature and Photosynthesis: How Does Temperature Affect the Rate of Photosynthesis in Plants? Introduction All the colors that our eyes can see can be found in plants that live in the world. 1 What is the effect of fluctuating light on npq4 plants?. The aim of the study was to investigate the effects of ALA on leaf photosynthesis, photosynthate transport, and sugar accumulation in fruits in order to provide a scientific basis to elucidate the mechanism of ALA in improving fruit quality and promoting ALA application in fruit production. The limiting factors that affect the rate of photosynthesis are carbon dioxide concentration, temperature, and light intensity. However, since only light is necessary in photosynthesis, not heat from sunlight, it was concluded that the leaves in the warm temperature environment had the fastest rate of photosynthesis due to enzymes that catalyze chemical reactions in photosynthesis that work better at higher temperatures. Included among the rate-limiting steps of the dark stage of photosynthesis are the chemical reactions by which organic compounds are formed by using carbon dioxide as a carbon source. The temperatures used were: 0 oC, 15 oC, 25oC, 35 oC, 45 oC, 55oC, and 65 oC. 13 mb. Other factors that affect the rate of photosynthesis are the light intensity, the amount of chlorophyll and other color pigments in a plant, and the color of light. This is because reactions occur when the plant enzymes collide and . photosynthetic organisms must be kept at temperatures ranging from 35 to 40 Celsius. In this video we explore exactly how,. they place an elodea plant into a test tube filled with water. Energy enters an ecosystem when producers carry out photosynthesis, capturing energy from the sun and storing it as chemical potential energy. For students between the ages of 11 and 14. Thus, less reactions can occur because it’s harder to find the substrate. Included among the rate-limiting steps of the dark stage of photosynthesis are the chemical reactions by which organic compounds are formed by using carbon dioxide as a carbon source. Observe the left pane closely. Warm-Up: 1. Observe the left pane closely. A rise in temperature is an increase of motion and energy, so collisions happen more often and more violently, resulting in. Experimental warming with. In our previous study, we performed a warming experiment for canopy leaves of Quercus serrata using open-top canopy chambers (OTCC) (Yamaguchi . IntroductionElodea is native to North America and is naturalized in Australia, Asia and Europe. Temperature is another factor that affects the rate of photosynthesis. Transpiration rate (a), net photosynthetic. However, they can only work at the optimum temperature. Factors that affect the Rate of Photosynthesis. All the colors that our eyes can see can be found in plants that live in the world. The response of CO2 assimilation rate (A) to the intercellular partial pressure of CO2 (Ci) was measured on intact lemon leaves over a range of temperatures . 1%, and the main environmental factors affecting SDD all have non-linear response relationships. 1018 Words; 5 Pages; Decent Essays. Each distance can effect the photosynthesis rate in a different amount. However, for photosynthesis at temperatures above 40°C the rate slows down. Interpolate to find k 298 (i. The process of photosynthesis is affected by temperature, as warmer temperatures can increase the rate of photosynthesis. This occurs because molecules are moving more quickly and there is a greater . Explanation At low temperature, the enzyme does not have enough energy to meet many substrate molecules, so the reaction is slowed. At the optimum temperature. Investigating the effect of changing temperature. The light colour can be fixed by using the same lamp throughout the experiment. However, since only light is necessary in photosynthesis, not heat from sunlight, it was concluded that the leaves in the warm temperature environment had the fastest rate of photosynthesis due to enzymes that catalyze chemical reactions in photosynthesis that work better at higher temperatures. 13 mb. LED lamps produce less heat. 21 and temperature of 25 °C Average growth rate (μm/min) Additive ppm (010) face (001) face (111. The optimum temperature for photosynthesis varies depending on the plant species. Observe: Set Temperature to 24°C, Light intensity to 50%, and CO 2 level to 200 ppm. So the molecules start moving at a higher speed and collide faster, increasing the rate of photosynthesis. In order to investigate the effect of day/night temperature difference (DIF) on photosynthetic characteristics of tomato plants (Solanum lycopersicum, cv. Apparent photosynthesis decreased with increasing temperature, from 20 to 40° and its rate was affected by both light intensity and oxygen concentration. Determine the intensity of light that limits the rate of photosynthesis, and at what point increased intensity no longer increases the photosynthetic rate. Photosynthetic CO 2 uptake varies with temperature. virtual lab photosynthesis name: date: student exploration: photosynthesis lab vocabulary: carbon dioxide, chlorophyll, glucose, limiting factor, nanometer,. Correct answers: 1 question: St students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. Investigations to determine the effects of light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis can be carried out using aquatic plants, such as Elodea or Cabomba (types of pondweed) The effect of these limiting factors on the rate of photosynthesis can be investigated in the following ways:. Vary the initial landscape, rock type, precipitation amount, average temperature, and vegetation and measure how each variable affects the rate of erosion and resulting landscape. Under constant temperature, relative humidity, and leaf surface area, the researchers used increasing. Using the timer, count the number of bubbles produced in one minute. Temperatures over the course of the experiment in high (red) and ambient (blue) treatments. In addition, the DIFs significantly affected the primary and secondary metabolites. Below is a graph showing the effect of carbon dioxide concentration on the rate of photosynthesis: (Cambridge Biology 1) Temperature – The light-dependant stage of photosynthesis is hardly affected by changes in temperature because this stage is driven by light as opposed to temperature. Just as human beings need various nutrients to survive, plants need several environmental conditions for. However, long-term exposure to high CO2 during plant growth has varying effects on dynamic photosynthesis. Determine the intensity of light that limits the rate of photosynthesis, and at what point increased intensity no longer increases the photosynthetic rate. Sunlight is required by plants to . However, since only light is necessary in photosynthesis, not heat from sunlight, it was concluded that the leaves in the warm temperature environment had the fastest rate of photosynthesis due to enzymes that catalyze chemical reactions in photosynthesis that work better at higher temperatures. There are a few key methods to calculate the rate of photosynthesis. Determine the intensity of light that limits the rate of photosynthesis, and at what point increased intensity no longer increases the photosynthetic rate. As the temperature is further increased more of the internal bonds are broken. So, photosynthesis is based upon several factors. The aim of my experiment is to determine whether or not the intensity of light will affect the rate of photosynthesis in a plant. Graph and analyze experimental results to interpret and compare photosynthesis rates. From the gradient of the two lines I. This is a challenging undertaking for which we present conceptual discussion and offer practical solutions. At any given point in this experiment, the number of floating leaf disks is an indirect measurement of the net rate of photosynthesis. Determine the intensity of light that limits the rate of photosynthesis, and at what point increased intensity no longer increases the photosynthetic rate. Here, we put forward two. Observe the left pane closely. From the gradient of the two lines I. However, at high intensities the rate of photosynthesis does not increase as quickly anymore. In order to investigate the effect of day/night temperature difference (DIF) on photosynthetic characteristics of tomato plants (Solanum lycopersicum, cv. Factors that affect the rate of photosynthesis include light, temperature, carbon dioxide concentration, and water. Other factors include; water, temperature, and carbon. Lesson organisation The work could be carried out individually or in groups of up to 3 students (counter, timekeeper and scribe). The results show that the comprehensive explanation rate of the GAM model is 72. Transpiration rate (a), net photosynthetic. The aim of my experiment is to determine whether or not the intensity of light will affect the rate of photosynthesis in a plant. At three hours, Pn, Gs, Tr and Ci were significantly lower in heat-treated plants. By the middle of this century, sea surface warming is expected to lead to the expansion of permanently stratified, low-productivity waters by 4. Greg Foot explains the effect of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis. b) Increasing CO2 levels will [ increase / decrease ] rate of photosynthesis. 1 Temperature and rate of photosynthesis Although the light dependent reactions of photosynthesis are not affected by changes in temperature, the light independent reactions of photosynthesis are dependent on temperature. For this experiment students will explore how to. temperature is low, increasing temperature will have the greatest effect on reaching a higher rate of photosynthesis. At the optimum temperature, the enzyme is most efficient and the rate if maximum. So, photosynthesis is based upon several factors. Just as human beings need various nutrients to survive, plants need several environmental conditions for photosynthesis to happen appropriately. First of all, heating of the liquid energizes the molecules, allowing them to escape and move into the air. Increasing the light intensity. The rate of photosynthesis increases with temperature. What do you think the bubbles are? Oxygen 2. Many factors affect the rate of photosynthesis mainly carbon dioxide concentration. In conclusion, temperature is a crucial factor that affects the rate of photosynthesis in plants. Increasing the light intensity. In order to investigate the influence of DIFs on the growth, photosynthesis, and metabolite accumulation of tea plants, the plants were cultivated under 5 °C (25/20 °C, light/dark), 10 °C (25/15 °C, light/dark), and 15 °C (25/10 °C, light/dark). Investigating the effect of changing temperature on the rate of photosynthesis. In Part 1, students will learn how to. Experiments to investigate photosynthesis. then the students place the test tube under a light and slowly increase the temperature of the water. Therefore, increasing the temperature will increase enzyme reaction and the photosynthetic rate until a certain point is reached when the enzymes denature. Elodea Temperature Experiment. March, universe, astronomy, experience | 130 views, 9 likes, 2 loves, 61 comments, 5 shares, Facebook Watch Videos from Morrison Planetarium at the. Water deficit adversely affects the growth and productivity of annual ryegrass (Lolium multiflorum Lam. Observe the left pane closely. The students investigated the effect of temperature on the rate of the. They do however, contain chlorophyll which give them the ability to perform photosynthesis; they use sunlight to convert carbon dioxide and water into energy and oxygen. After the optimum temperature enzymes will denature making the rate of photosynthesis decrease as the temperature gets higher. At temperatures above 40°C the rate slows down. Temperature can also be a limiting factor when it is too hot or too cold for photosynthesis to work well. Secondary effects from climate warming could compound the direct effect of temperature on Synechococcus spp. Gradually the rate falls of and at a certain light intensity the rate of photosynthesis stay constant. You can develop more accurate measures by collecting the gas produced and measuring the volume of gas produced each minute (or over longer time periods). Part B : The Effect of Temperature on v 0. growth and photosynthesis. Warming responses of photosynthesis and its temperature dependence in two C 3 grass (Agropyron cristatum, Stipa krylovii), one C 4 grass (Pennisetum centrasiaticum), and two C 3 forb (Artemisia capillaris, Potentilla acaulis) species in a temperate steppe of northern China were investigated in a field experiment. In this virtual photosynthesis lab, students can manipulate the light intensity, light color, and distance from the light source. In this experiment, 3-year-old ‘Lu Hong 618’ was used as the test material to study the effects of different main branch opening angles (three treatments: 45°, 65°, and 85°) on the canopy light distribution, canopy characteristics, fruit quality, and flower bud quality of ‘Y’-shaped peach trees. The rates of these reactions can be increased somewhat by increasing the carbon dioxide concentration. Increasing temperature will [ increase / decrease ] rate of. However, at high intensities the rate of photosynthesis does not increase as quickly anymore. Just as human beings need various nutrients to survive, plants need several environmental conditions for photosynthesis to happen appropriately. Temperature: Temperature affects the rate of photosynthesis. porn hub sites
Water deficit adversely affects the growth and productivity of annual ryegrass (Lolium multiflorum Lam. . The effect of temperature on the rate of photosynthesis experiment
Determine the intensity of light that limits the rate of photosynthesis, and at what point increased intensity no longer increases the photosynthetic rate. Temperature is another factor that affects the rate of photosynthesis. The limiting factors that affect the rate of photosynthesis are carbon dioxide concentration, temperature, and light intensity. See our example GCSE Essay on Investigation To Measure How Temperature Affects The Rate Of Photosynthesis In Water Plants. These include: Measuring the uptake of CO2. July 2020; DOI:10. The elodea was placed in these temperatures and a light shone on them for 5 minutes. Materials Experimental variables Color filter paper Table/desk lamp. However, at high intensities the rate of photosynthesis does not increase as quickly anymore. The higher the temperature then typically the greater the rate of photosynthesis, photosynthesis is a chemical reaction and the rate of most chemical reactions . a modification was made to the original experiment to determine the effect of temperature on the rate of osmosis. a modification was made to the original experiment to determine the effect of. The aim of the study was to investigate the effects of ALA on leaf photosynthesis, photosynthate transport, and sugar accumulation in fruits in order to provide a scientific basis to elucidate the mechanism of ALA in improving fruit quality and promoting ALA application in fruit production. Determine the effects of temperature and Atrazine on the rate of photosynthesis. Water: Water is essential for photosynthesis. There was a downward trend in the photosynthesis among the treatments, as evidenced by the lowest net photosynthetic rate and total chlorophyll at a DIF of 15 °C. Photosynthetic CO 2 uptake varies with temperature. Correct answers: 1 question: St students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. So the molecules start moving at a higher speed and collide faster, increasing the rate of photosynthesis. Question: What is the effect of limiting factors on photosynthesis? Observe : Set Temperature to 24°C, Light intensity to 50%, and CO 2 level to 200 ppm. they record their results and. then the students place the test tube under a light and slowly increase the temperature of the water. In order to interpret the effects of colored light filters, students will need to be familiar with the absorption spectrum of chlorophyll (and other plant pigments). At three hours, Pn, Gs, Tr and Ci were significantly lower in heat-treated plants. Observe: Set Temperature to 24°C, Light intensity to 50%, and CO 2 level to 200 ppm. At low (10 °C) and high temperatures (40 °C) the rate of photosynthesis is not as efficient. The optimum temperature for photosynthesis varies depending on the plant species. See our example GCSE Essay on Investigation To Measure How Temperature Affects The Rate Of Photosynthesis In Water Plants. Two separate experiments were conducted; in the first experiment, the effects of photoperiods (11, 14, and 17 h d−1) and light intensities (150, 200, 250, and 300 μmol m−2 s−1 PPFD) were. Guard cells: As . The present study provides a synthesis of the in vitro and in vivo temperature responses of Rubisco Michaelis-Menten constants for CO2 (Kc) and O2 (Ko), specificity factor (Sc,o) and maximum carboxylase turnover rate (kcatc) for 49 species from all the main photosynthetic kingdoms of life. Apparatus and Chemicals Students may choose to use: Hot water Ice Thermometer, -10 °C -110°C Balance Coloured filters or light bulbs Stopclock Push-button counter. increased photosynthesis, a combination of elevated CO2 and high temperature as well as increased respiration rate can reduce the positive . Carbon dioxide (CO. Temperature and Photosynthesis: How Does Temperature Affect the Rate of Photosynthesis in Plants? Introduction All the colors that our eyes can see can be found in plants that live in the world. However, long-term exposure to high CO2 during plant growth has varying effects on dynamic photosynthesis. mine how temperature and light intensity affect the rate of photosynthesis. Measuring photosynthesis via the production of carbohydrates There is a crude method where a disc is cut out of one side of a leaf (using a cork borer against a rubber bung) and weighed after drying. The rate of photosynthesis increases with temperature. When the enzymes in the light dependent reactions reach their optimal temperatures the rate of photosynthesis increases. Photosynthesis takes place in the chloroplast in eukaryotic organisms. Many factors affect the rate of photosynthesis mainly carbon dioxide concentration. Determine the effects of temperature and Atrazine on the rate of photosynthesis. You will therefore need a way to calculate a rate of photosynthesis. Using the timer, count the number of bubbles produced in one minute. the process of photosynthesis, as are water, carbon dioxide, temperature, nitrogen, and other macro- and micronutrients. The aim of this experiment is to investigate the effect of temperature on the rate of photosynthesis in Elodea (Canadian pondweed). In the first experiment, 5 temperatures conditions (10, 15, 20, 25, and 30 °C) at PAR of 150 μmol photons m −2 s −1 and salinity of 30 were tested. Investigations to determine the effects of light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis can be carried out using aquatic plants, such as Elodea or Cabomba (types of pondweed) The effect of these limiting factors on the rate of photosynthesis can be investigated in the following ways:. The higher the temperature then typically the greater the rate of photosynthesis, photosynthesis is a chemical reaction and the rate of most chemical reactions . Each distance can effect the photosynthesis rate in a different amount. There is an included data table for students to type into the simulator, but I. Below is a graph showing the effect of carbon dioxide concentration on the rate of photosynthesis: (Cambridge Biology 1) Temperature – The light-dependant stage of photosynthesis is hardly affected by changes in temperature because this stage is driven by light as opposed to temperature. March, universe, astronomy, experience | 130 views, 9 likes, 2 loves, 61 comments, 5 shares, Facebook Watch Videos from Morrison Planetarium at the. The dependent variable of this experiment, or the variable that changed in response to the independent variable, was the rate of photosynthesis experienced by the chards. Make a hypothesis; how will changing temperature change the rate of photosynthesis?. At the optimum temperature, the enzyme is most efficient and the rate if maximum. Even if one of the optimum requirements is affected, so is the rate of photosynthesis in plants. Investigations to determine the effects of light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis can be carried out using aquatic plants, such as Elodea or Cabomba (types of pondweed) The effect of these limiting factors on the rate of photosynthesis can be investigated in the following ways:. You can develop more accurate measures by collecting the gas produced and measuring the volume of gas produced each minute (or over longer time periods). Background Information: This experiment investigates the relationship between the photosynthesis rate and temperature on spinach leafs. The control for our experiment was the rate of photosynthesis for room temperature. 2) photosynthesis requires carbon dioxide to. Design and run an experiment to test the effect of temperature change on photosynthesis. In most cases its response to temperature is rapidly reversible between about 10 and 34°C. Photosynthetic rates. NGSS Alignment This lesson helps students prepare for these Next Generation Science Standards Performance Expectations: MS-LS1-6. In this virtual photosynthesis lab, students can manipulate the light intensity, light color, and distance from the light source. These variations can reach an amplitude of 40°C or even more, both in polar regions and in hot desert areas. Two separate experiments were conducted; in the first experiment, the effects of photoperiods (11, 14, and 17 h d−1) and light intensities (150, 200, 250, and 300 μmol m−2 s−1 PPFD) were. 1 What is the effect of fluctuating light on npq4 plants?. As temperature increases above freezing, the rate of photosynthesis increases. There was a synergistic effect of elevated temperature and light on photosynthesis, as observed in the photochemical efficiency and pigment contents, suggesting photo-damage. So, photosynthesis is based upon several factors. For most plants, the optimum temperature is between 20 and 30 degrees. See our example GCSE Essay on Investigation To Measure How Temperature Affects The Rate Of Photosynthesis In Water Plants. At temperatures above 40°C the rate slows down. A bidirectional phosphate transporter relieves phosphate limitations of photosynthesis to improve grain yield in rice March 2023 DOI: 10. 10 may be calculated by knowing the rate of photosynthesis at every 10°C rise of temperature from the. Determine the effects of temperature and Atrazine on the rate of photosynthesis. In our previous study, we performed a warming experiment for canopy leaves of Quercus serrata using open-top canopy chambers (OTCC) (Yamaguchi . Without enough light, a plant cannot photosynthesise very quickly - even if there is plenty of water and carbon dioxide. Photosynthesis requires two chemicals to react: CO. Given that temperature might also play a role in the need for qE through its effect on photosynthesis irradiance curves and rate of response to fluctuating light this factor was also included. The control for our experiment was the rate of photosynthesis for room temperature. Below is a graph showing the effect of carbon dioxide concentration on the rate of photosynthesis: (Cambridge Biology 1) Temperature – The light-dependant stage of photosynthesis is hardly affected by changes in temperature because this stage is driven by light as opposed to temperature. Just as human beings need various nutrients to survive, plants need several environmental conditions for photosynthesis to happen appropriately. 4% in the southern hemisphere. The students can be allocated to investigate a particular factor that affects the rate of photosynthesis, or they can choose from this list, or they can develop their own ideas. The rate of photosynthesis can be increased if the temperature is higher. . canik tp9 elite sc magazine in stock, new pinay sex, newport news virginia craigslist, where are the gorillas in blox fruits, ilulu porn, commolit, 1920s dirty songs, not enough nelsons paislee outfits, returnal reddit, paint stroke svg, eroticmassage porn, naked hot man co8rr