The carbon cycle is closely linked to energy flow within an ecosystem because

a. carbon can be used as an energy source.
b. all organisms are made of carbon compounds.
c. carbon can form four covalent bonds.
d. energy and carbon are both fixed into nutrient molecules by producers.
e. carbon compounds can be both inorganic and organic.


D

Biology & Microbiology

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Indicate whether this statement is TRUE or FALSE.

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