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21 Cards in this Set
- Front
- Back
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Why is carbon referred to as the basic building block of life?
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Because it is the basis of fats, carbohydrates, protiens, DNA and more.
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Where can carbon be found?
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In forests, in oceans, deep in the ground as fossil fuels and inside every living thing.
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How is Carbon dating used?
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It is used on the princible that carbon breaks down at a constant rate and so can be used to find the age of once living things.
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How do producers (plants and some marine life) convert carbon into complex carbohyhdrates?
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by absorbing the carbon dioxide from the atmosphere and using photosynthesis.
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How do the consumers in the food cycle fit into the carbon cycle?
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The consumers use the complex carbohydrates from the producers internally as a source of energy and than convert it bak to CO2 via aerobic respiration.
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How is a humans breathing part of the carbon cycle?
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We breath in oxygen and breath out CO2.
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Does vegetation use carbon for energy?
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yes
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What percentage of the atmosphere is carbon?
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0.04%
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Carbon is in the atmosphere as a green house gas. What are its effects?
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Makes the earth warmer as it filters radiation leaving and entering.
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What human impact has resulted in hightening the amount of carbon in the atmosphere?
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Burning fossil fuels.
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Why do plants turn to charcole when burnt?
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They are made up of carbon
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what happens to carbon once the plant it was in has died?
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It becomes part of the detritus which is a nutrient for the soil where it is broken down by bacteria and fungi to be released back into the atmosphere.
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Of all the earths carbon what percent is in soil?
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3%
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Why is carbon needed in the Ocean?
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for marine plants and life to grow.
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Which surface absorbs the greatest amount of carbon?
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Cold Ocean Water
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How does Carbon get to the deep ocean?
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from dead and decaying marine life and through covection currents.
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What percentage of the earths carbon is in the oceans?
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60%
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Why does carbon stay in the deep ocean for so long?
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Because of pressure
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How are oils coals and natrual gasses formed?
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Animal and plant matter that has been settled for millions of years under enourmours heat and pressure inside the earth, eventually decays and is stored.
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What role does limestone play in the Carbon cycle?
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it holds and stores CO2 brought to the bottom of the ocean as exoskeletons of dead marine life for millions of years.
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What is the problem with burninf fossil fuels?
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It throws out the natural balance because more CO2 is being released than can be absorbed.
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