Download Carbon Cycle

Name ___________________________________________________________ Date _________________ Period___________
Biogeochemical Cycles
Carbon Cycle
1.
In the atmosphere, carbon is present as _____.
2.
Name the 3 ways that carbon dioxide is released into the atmosphere.
3.
What type of organism takes in carbon dioxide and use the carbon to build carbohydrates
during photosynthesis?
4.
In what organisms does photosynthesis take place in the ocean?
5.
What process allows CO2 to get into the ocean water?
6.
Carbon dioxide in the ocean is called what?
7.
Name the process where organisms die and are broken down to again be reused.
8.
What other process besides photosynthesis recycles carbon through the atmosphere?
9.
Decay, burial and compaction of decomposed organic substances over time create what
nonrenewable resource?
Nitrogen Cycle
10.
Name 3 nitrogen containing substances.
11.
What type of bacteria are found on the roots of plants?
12.
Nitrogen fixing bacteria in the soil convert atmospheric nitrogen into what?
13.
Name 3 bacteria that convert Nitrogen.
14.
Without bacteria in the soil, what would happen to the food chain that includes the rabbits?
15.
All organisms require nitrogen to make what organic substance?