Mussels are animals that live in rivers. They survive by filtering algae and small animals from the water. Although they can move very slowly, they depend on the flow of the river for food.

Question

How are Earth's spheres interacting in this example?
A.
The atmosphere mixes with the geosphere.
B.
The geosphere helps cycles occur in the hydrosphere.
C.
The biosphere depends on the atmosphere to survive.
D.
The hydrosphere supports life in the biosphere.

Answer 1

In this example, the interaction between Earth's spheres can best be described by option:

D. The hydrosphere supports life in the biosphere.

Mussels, as living organisms (biosphere), rely on the water (hydrosphere) from rivers to filter for food, thus showcasing the interaction between these two spheres.