In biogeochemical cycles, the material in these cycles _________________ and the energy that drives these cycles ______________.
A) remains indefinitely; must be constantly renewed
B) remains indefinitely; remains indefinitely
C) must be constantly renewed; must be constantly renewed
D) must be constantly renewed; remains indefinitely

Question

Quizplus · Accepted Answer

In biogeochemical cycles, materials such as nutrients are recycled and remain indefinitely within the ecosystem, while the energy that drives these cycles, primarily from the sun, must be constantly renewed as it flows through the ecosystem and is eventually lost as heat.

In Biogeochemical Cycles, the Material in These Cycles _________________ and the Energy