Which of the following "spheres" is the biogeochemical cycle NOT directly connected to?
A) the hydrosphere
B) the atmosphere
C) the asthenosphere
D) the lithosphere
E) the biosphere

Question

Quizplus · Accepted Answer

The asthenosphere is the layer of the Earth's mantle that is below the lithosphere and is part of the geosphere, which is not directly connected to the biogeochemical cycle. The other answer choices are all connected to the biogeochemical cycle: the hydrosphere includes water cycles, the atmosphere includes gas cycles, the lithosphere includes rock and mineral cycles, and the biosphere includes nutrient cycles.

Which of the Following "Spheres" Is the Biogeochemical Cycle NOT