When they say "carbon is found in many pools", what do they mean by pool?

Question

a place carbon is rarely found.

a natural collection point, or storage area

a place to play billiards

a place to swim

Answer 1

When they say "carbon is found in many pools," they are referring to a natural collection point or storage area for carbon. In this context, "pool" does not refer to a place to play billiards or a place to swim. It is used metaphorically to describe areas where carbon is accumulated or stored, such as in the atmosphere, oceans, plants, soil, or fossil fuels.

Answer 2

Answer 3