Escalated Carbon dioxide level in the atmosphere: The most concerned environmental issue
Escalated Carbon dioxide level in the atmosphere: The most concerned environmental issue The worlds condition today is one of distortion, though everything may seem to be fine it is not that way. From the beginning of civilization we have progressed a lot in terms culture, technology but at the same time we have caused major damages to our planet. In other words, our surrounding environment is in a very critical situation. This is not happening just in one region but the entire globe is being affected. One of the most if not the most dangerous threat to the Environment is the global climatic warming. The center of this phenomenon is the increased amount of Carbon dioxide gas in our atmosphere. One may ask why CO2 is so harmful when it's an important reactant for photosynthesis, which eventually produces oxygen that gives us the ability to breathe and live properly. The answer to this is very simple. ''Nature knows best''. In other words, once we try to interfere in any kind of natural activity, discrepancies will start forming. CO2 levels were not always high. There is a limit to how much plants will be able to synthesize at a time. The excess CO2 in the atmosphere is all due to human-induced activities. From burning fossil fuels to deforestation, all these human activities releases a superior amount of CO2 in the atmosphere which thus cause the 'Greenhouse gas effect'
Effects of temperature and carbon dioxide on photosynthetic rate in Elodea.
A2 Biology- Effects of temperature and carbon dioxide on photosynthetic rate in Elodea. Aim: to investigate the effects of temperature and carbon dioxide on the photosynthetic rate of Elodea. Background knowledge: Photosynthesis is the use of light energy from the sun to fix carbon dioxide i.e. converted to sugars. These sugars can then be converted into other essential substances- fats and proteins etc.- that plants need to live and grow. Photosynthesis can be represented using the following equation: 6CO2 + 6H2O ? C6H12O6 + 6O2 The light independent stage occurs in the stroma. Firstly CO2 combines with a 5C compound called ribulose bisphosphate. This reaction is catalysed by the enzyme RuBPC. The 6C compound formed immediately splits into two molecules of glycerate-3-phosphate (GP). The GP molecules are converted into molecules of triose phosphate (TP) using energy from ATP and the hydrogen atom from NADPH. Some of the TP is used to regenerate RuBP. Finally the rest of the TP is used to produce other essential substances that the plant needs- fats, proteins etc. As light intensity is increased, photosynthesis begins, and some carbon dioxide from respiration is utilised in photosynthesis and so less is evolved. With a continuing increase in light intensity a point
Do higher Carbon Dioxide levels lead to warmer conditions?
Do higher Carbon Dioxide levels lead to warmer conditions? Background information. Carbon dioxide is a gas that is released with many things, including combustion, respiration, and weathering issues. Carbon dioxide is said to have issues with global warming, as it forms a 'blanket' in the atmosphere that slows down the escape of excess heat into space. It does this by absorbing infra red radiation and remitting it as heat. This travels back down to earth and continues the global warming effect. We need some atmosphere around the planet so that we can live in comfortable temperatures, but too much heat trapped in the planet causes the globe to heat up and the temperature will be too hot to allow humans to live. It also has direct consequences for the atmosphere around us and around in our habitats. It will be too hot for our food to grow properly so we won't be able to have the correct diet. The gases which form the atmosphere are called greenhouse gases, as they form a green house effect by trapping the hot air in. Hypothesis. As carbon dioxide is classed as a greenhouse gas, I would expect the temperature in the bottle filled with carbon dioxide to be warmer than the one filled with regular air and to cool down slower. Procedure. . Using limestone and acid, produce carbon dioxide and collect it in a bottle. Secure the lid on tightly and insert a temperature probe
The Effect of Carbon Dioxide Levels on Photosynthesis
The Effect of Carbon Dioxide Levels on Photosynthesis When the concentration of carbon dioxide is low the rate of photosynthesis is also low. This is because the plant has to spend a certain amount of time doing nothing, waiting for more carbon dioxide to arrive. Increasing the concentration of carbon dioxide increases the rate of photosynthesis. The time spent idle becomes less and less. There is a point at which further addition of carbon dioxide will not increase the rate of photosynthesis. The enzymes controlling the reaction are working as fast as possible, so the excess carbon dioxide cannot be utilized. Carbon dioxide is not the limiting factor at this
GCSE Chemistry - Limestone and Carbon Dioxide Coursework
GCSE Chemistry - Limestone and Carbon Dioxide Coursework Hypothesis I think that the smaller limestone chips will produce the greater amount of carbon dioxide than the larger chips as there will be a greater surface area for the acid to react upon. This is because the greater the surface area the higher the amount of collisions between limestone and acid particles. Therefore the smaller chips will lose a greater mass. The formula for this reaction is Marble + Hydrochloric = Carbon + Water + Calcium Chips Acid Dioxide Chloride CaCO3(s) + 2HCL(aq) = CO2(G) + H2O(l) + CACL2(aq) Method · Set up apparatus as shown in diagram. · Weigh the correct mass of limestone. · Add acid to the limestone and record the change in mass. · Repeat for each chip size. Safety · Be careful handling the acid. · Wear goggles at all times. · Be careful dropping limestone into glass beakers. Fair Test Variable Particle Size Factors remaining the same Same mass of limestone Same volume of acid Same molar acid Apparatus Large Beaker Weighing Scale Measuring Cylinder Spatula Stopwatch Cotton Wool Obtaining Analysing Conclusion. The prediction I made was correct as the smaller the particle size the greater the mass loss. This is because of the collision theory - the higher the total surface area the more particles can collide and react. The larger chips have a smaller
effect of carbon dioxide on rate of photosynthesis
Planning of photosynthesis investigation Aim: The aim of this experiment is to investigate into the effects of the change of carbon dioxide concentrations on the rate of photosynthesis. Prediction: My hypothesis is that as the concentration of carbon dioxide increases the rate of photosynthesis will also increase. Graph showing the effects of carbon dioxide on the rate of photosynthesis Light intensity Scientific reasoning: Photosynthesis is the process by which chlorophyll containing organisms capture energy in the form of light and convert it to chemical energy. Plants make food through a process called photosynthesis. Using energy from the sun, cells in the leaves turn simple materials into energy rich food. Spongy cells are partly surrounded with pockets of air, which enable the cells to exchange gases with the atmosphere. The stomata are small openings in the lower epidermis under the leaf. Carbon dioxide enters through the stomata. Carbon dioxide combines with water and is photosynthesised into oxygen and sugar. Equation for photosynthesis 6 CO2 + 12H2O?C6H12O6+ 6O2 + 6H2O Oxygen escapes through the stomata and the sugar dissolved in water is carried throughout the plant providing energy for growth. Photosynthesis consists of two stages: a series of light- dependent reactions, which are temperature independent and a series of light independent reactions,
Do Higher Carbon Dioxide Levels Lead to Warmer Conditions?
7/01/04 Do Higher Carbon Dioxide Levels Lead to Warmer Conditions? Analysis From the graph, one can clearly see a pattern between the air and carbon dioxide. Both rise steadily until 20 minutes and then when the lamp is turned off, they both decline. After the first 10 minutes the temperature of the air is 21.90°C and the temperature of the carbon dioxide is 22.40°C, so there is a difference of 0.50°C. After 20 minutes the temperature of the air is 22.70°C and the temperature is 23.30°C, and there is a difference of 0.60°C. This shows that the carbon dioxide has increased by 0.10°C. After 30 minutes the temperature of the air was 21.70°C and the temperature of the carbon dioxide was 21.90°C. So you can see already, that after 10 minutes of the light being switched off, that the temperature gap between the air and carbon dioxide is getting smaller already. After 40 minutes the temperature of the air was 21.15°C and the temperature of the carbon dioxide was 21.45°C. Although both of these temperatures have lowered, the gap has stayed the same indicating that carbon dioxide retains temperature better than air. When the lamp was on, the carbon dioxide heated quicker than the air. After 5 minutes there was a gap of 0.40°C and after 20 minutes that gap had increased by 0.01°C. This shows that as time increases the carbon dioxide takes in more heat energy, getting
How Does The Amount Of Carbon Dioxide Available Affect Photosynthesis?
How Does The Amount Of Carbon Dioxide Available Affect Photosynthesis? Aim: In doing this experiment I aim to see how varying the amount of Carbon Dioxide available changes the rate of photosynthesis. Prediction: I predict that the higher the Carbon Dioxide levels the higher the rate of photosynthesis will be. This is because Carbon Dioxide is needed for photosynthesis; therefore if more CO2 is available more photosynthesis can take place. Diagram: Equipment: beaker funnel lamp stop clock ruler syringe Pondweed Bicarbonate of soda Method: First we collected the equipment. We filled the beaker with water, placed the funnel upside-down inside the beaker with the pondweed underneath. We linked up the syringe as shown in the diagram; this is to collect the oxygen. We put the lamp 30cm from the beaker. We are going to do the experiment 11 times, timing it 10 mins each time. The first time we will add no bicarbonate of soda, then increase the levels by 0.5% each time until we reach 5%. We are going to collect the oxygen produced, as oxygen is a by-product of photosynthesis. Therefore the more oxygen produced, the greater the rate of photosynthesis. Fair Test: To make this experiment fair we kept every variable the same each time, except for the one we were changing as part of the experiment, which is the amount of Carbon Dioxide used. We used all the equipment,
The Effect of Carbon Dioxide Concentration On The Rate of Photosynthesis.
Sophie Louise Beard The Effect of Carbon Dioxide Concentration On The Rate of Photosynthesis Aim To investigate the effect of carbon dioxide concentration on the rate of photosynthesis. Prediction I predict the higher the carbon dioxide concentration (sodium hydrogen carbonate solution concentration) the faster and higher the rate of photosynthesis will increase meaning more oxygen produced (more O bubbles given off) over a period of time [2 minutes]. The amount of carbon dioxide taken in I predict will be proportional to the amount of oxygen given out. E.g. 6CO +6H O --> C H O +6O As the amount of CO O I predict the graph will look something like this At the end of the graph, it will eventually level off and stop producing oxygen due to the limiting factors. Diagram Variables Things we could change which would effect our results are -: * Amount of light intensity * Amount of carbon dioxide(sodium hydrogen carbonate solution molar) * Different conditions (temperature) * Amount of pond weed We are going to change the sodium hydrogen carbonate solution concentration/molar to look at the effect the amount of carbon dioxide has on the rate of photosynthesis. Everything else will be kept the same. Safety Be careful when handling glass and allow the lamp to cool before packing it away or touching. Keep the area your working in clean and tidy; clean
how the concentration of carbon dioxide affects the rate of photosynthesis
In this course work, I will be discussing how the concentration of carbon dioxide affects the rate of photosynthesis. To find this out I will do an experiment to find out how much oxygen a piece of Elodea (Canadian pondweed) produces over a set period under controlled supervision. Back Ground Knowledge All plants photosynthesise, They do this in order to create their own food by converting sunlight, carbon dioxide and water into glucose and oxygen, which is a by-product (6Co + 6H O --> C H O + 6O ) Plants have a part in their cell called chloroplast which contain chlorophyll the diagram below explains: What are the limiting factors of photosynthesis? Although the diagram shows you what you need for photosynthesis it does not tell you what the limiting factors are. The limiting factors in photosynthesis are carbon dioxide, water, light and chlorophyll. This is because up to a point the more of each factor that is available to the plant will result in an increase in the photosynthesizing rate. Why did I use pondweed? I used pondweed so I could measure the amount of oxygen it produced accurately. I can do this by catching the oxygen bubbles under water, because of this choosing an aquatic plant was the best choice. I will use 5cm of elodea because it is a big enough piece to get a measurable result. I will know how quickly the elodea has photosynthesised by taking readings
