The Sink of an Element in the Ecosystem

Question

The sink of an element in the ecosystem
A) is the reservoir to which it returns during cycling.
B) is the most accessible reservoir of that element.
C) renders the element inaccessible.
D) releases the element into the subsurface.
E) is the source of the element for living organisms.

Accepted Answer

The sink of an element in the ecosystem is the reservoir to which it returns during cycling. This is because elements move through various cycles in the ecosystem, such as the water cycle, carbon cycle, or nitrogen cycle. In each cycle, the element is taken up by various organisms and released back into the environment to be used again. The sink is the point in the cycle where the element is stored for a time before being released back into the ecosystem.