Question

select the correct answer from each drop - down menu. why are biogeochemical cycles important? earth is a closed system. that means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on earth is essential that biogeochemical cycles these materials as they move through earths subsystems.

Explanation:

In a closed - system like Earth, the total amount of key materials remains constant. Biogeochemical cycles are crucial for recycling these materials as they move through different subsystems.

Answer:

remains constant