The Green House Effects is one of the main causes of this warming. Some greenhouse gases are needed. “The greenhouse effect is unquestionably real and helps to regulate the temperature of our planet.” (EPA) Without the GreenHouse effect the Earth could not be warmed. Human activity is adding more of these gases. “The increase in the mean temperature of the earth due to excessive emissions of greenhouse gases such as carbon dioxide, methane, and nitrogen.” ( Green) These extra gases are making it hard for heat to escape the Earth’s atmosphere resulting in warmer temperatures.
Even the extensive evidence that high amounts of greenhouse gases do have an impact on the rising temperature many still think all of this is part of the Earth’s natural cycle. During the last century temperatures have increased on a global scale, known as global warming. There has been a sharp rise in average temperature being 0.7°C between 1900 and 200. Scientists believe that this rise in temperature is mainly due to human factors and the increase of industrialisation and the revolution. These industrial activities have raised atmospheric gases such as carbon dioxide which contribute to greenhouse gases.
Name: Alexis Savastano How Does pH Affect an Enzyme? Catalase is an enzyme that helps decompose the toxic hydrogen peroxide that is produced during normal cell activities. The products of this reaction are water and oxygen gas. The pressure of the oxygen gas in a closed container increases as oxygen is produced. Any increase in the rate of reaction will cause an increase in the pressure of the oxygen.
The products of a combustion reaction are carbon dioxide and water. I also found out that it takes skill to light a match and that it’s difficult to keep gas where you want it to be without a sealed container. There are many sources of error. The first source of error was that if you blow on the candle too hard, the wax vapor blows away and the flame doesn’t jump. The next source of error is that if you don’t put in the limewater and stopper quickly enough, the carbon dioxide escapes and the water won’t turn chalky.
Photosynthesis is the process where light energy is converted into chemical energy in the form of glucose. Its overall equation is: 6CO2 + 6H20 + light energy C6H12O6 + 6O2. The process of photosynthesis can be split into two reactions: the light-dependent reaction in the thylakoids and the light-independent reaction in the stroma. During the light-dependent reaction, light energy from the Sun is absorbed by chlorophyll (found in the chloroplasts in the leaf). This causes the excitation of two electrons, and they move to a higher energy level.
Rigsby Stevenson February 16, 2013 SL Biology Photosynthesis IA (Design Outline) Design: My IA is designed to be able to observe the effects on the rate of photosynthesis in a plant through the variation of light intensity. The elodea plant was chosen as the plant to experiment on and measured its rate of photosynthesis. This was carried out by counting the bubbles that it produced in a certain amount of time (1 minute, with 15 second intervals). The more bubbles it produced in the allotted time, the faster the rate of photosynthesis. Introduction: Photosynthesis is one of the most important processes for organisms to live, and it is a process that essentially absorbs light energy from the sun and turns it into chemical energy.
I think that happened because in very hot water the molecules move around really fast so they run into each other more causing a faster chemical reaction. Some things that could have affected my results are we could have pressed the stop watch at the wrong time, the temperature might not have been exactly the same each time. It was also hard to know when to stop the stopwatch because it was hard to see inside the cup when it had ice in it. 1. For observing the reaction, use 8oz of water at four different starting temperatures: hot tap water, cold tap water, water heated in microwave, and ice water.
Hypothesis When the light is at a closer distance to the Elodea plant, the amount of oxygen bubbles produced in 2 minutes will increase displaying the high rate of photosynthesis. Light is required in order for the process of photosynthesis to function correctly, therefore the higher the light intensity then the rate of photosynthesis will increase too. Variables Independent Variables | The independent variable will be the distance that the light is away from the Elodea plant since this needs to be changed to impact the dependant variable. | Dependant Variables | The
The Action Spectrum and the Absorption Spectrum Introduction: The purpose of this experiment is to learn the rates of photosynthesis under different lights, and the absorbance of photosynthetic pigments in spinach extract. “There would be no biology without photosynthesis. Plant biomass is the food and fuel for all animals. Plants are the primary producers. These amazing organisms are capable of capturing the energy of sunlight and fixing it in the form of potential chemical energy in organic compounds.” (Measuring the rate of photosynthesis) “Light is one of the main factors that affects the rate of photosynthesis, which literally means using light to create something new.” (What Are Three Factors That Affect the Rate Which Photosynthesis Occurs?)
In larger organisms, simple diffusion is not an efficient way of transporting gases between cells in the body and the gas exchange surface. In many animals a blood circulatory system carries gases to and from the gas exchange surface. The gas-carrying capacity of the blood is increased by respiratory pigments, such as haemoglobin. Animals with an internal gas exchange surface ventilate it by passing fresh air or water through their