A grass snake living in northern England dies of natural causes. After a long period of time, its remains decay in the soil to become fossil fuel. When the fossil fuel is processed, sold, and burned by humans, it releases carbon dioxide into the air. Which aspect of this scenario shows a carbon source becoming a carbon sink?

Question

A.
burning of the fossil fuel
B.
decaying of the snake’s remains
C.
dead snake fossilizing underground
D.
respiration by the snake and humans
E.
humans processing and selling the fuel

Answer 1

I think this might be a select all that apply question

Answer 2

Form Google:

car·bon sink, noun: carbon sink; plural noun: carbon sinks
a forest, ocean, or other natural environment viewed in terms of its ability to absorb carbon dioxide from the atmosphere.