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21 Cards in this Set

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Why is carbon referred to as the basic building block of life?
Because it is the basis of fats, carbohydrates, protiens, DNA and more.
Where can carbon be found?
In forests, in oceans, deep in the ground as fossil fuels and inside every living thing.
How is Carbon dating used?
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.
How do producers (plants and some marine life) convert carbon into complex carbohyhdrates?
by absorbing the carbon dioxide from the atmosphere and using photosynthesis.
How do the consumers in the food cycle fit into the carbon cycle?
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.
How is a humans breathing part of the carbon cycle?
We breath in oxygen and breath out CO2.
Does vegetation use carbon for energy?
yes
What percentage of the atmosphere is carbon?
0.04%
Carbon is in the atmosphere as a green house gas. What are its effects?
Makes the earth warmer as it filters radiation leaving and entering.
What human impact has resulted in hightening the amount of carbon in the atmosphere?
Burning fossil fuels.
Why do plants turn to charcole when burnt?
They are made up of carbon
what happens to carbon once the plant it was in has died?
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.
Of all the earths carbon what percent is in soil?
3%
Why is carbon needed in the Ocean?
for marine plants and life to grow.
Which surface absorbs the greatest amount of carbon?
Cold Ocean Water
How does Carbon get to the deep ocean?
from dead and decaying marine life and through covection currents.
What percentage of the earths carbon is in the oceans?
60%
Why does carbon stay in the deep ocean for so long?
Because of pressure
How are oils coals and natrual gasses formed?
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.
What role does limestone play in the Carbon cycle?
it holds and stores CO2 brought to the bottom of the ocean as exoskeletons of dead marine life for millions of years.
What is the problem with burninf fossil fuels?
It throws out the natural balance because more CO2 is being released than can be absorbed.