6. Which of the following is NOT an example of a carbon sink?
a. Deposition of organic matter on the deep
ocean floor
b. Preservation of a tropical rainforest
c. Formation of calcium carbonate shells of
marine crustaceans
d. The vast open ocean
e. Nutrient uptake by the roots of grasses in a
suburban lawn

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

Ithink the answer is c. i’m not sure though i’ll notify you when i have an exact answer!