1. Match them together.
Deforestation, combustion, circulation, weathering, calcium carbonate
A.the burning of fossil fuels to make energy
B.the primary component of mollusk shells and coral skeletons
C.the wearing down of rocks over time
D.the logging of trees, which removes producers from the carbon cycle
E.the process which brings up nutrients from the deep ocean

2. Match them together.
Diffusion, decomposition, fossil fuels, photosynthesis, respiration
A.the breakdown of organic matter, such as dead animals
B.recycles carbon from carbon dioxide into glucose
C.oil and coal produced from compacted decomposed organic matter
D.movement from an area of higher concentration to an area of lower concentration
E.uses glucose and releases carbon dioxide

3.match them together.
atmosphere, hydrocarbons, sink, shells, oceans and lakers
A.contain(s) dissolved carbon
B.another term for fossil fuels
C.storage location(s) for carbon
D.contain(s) carbon dioxide in the form of gas
E.contain(s) carbon in the form of calcium carbonate