Earth as a System Earth has four major spheres: the atmosphere, the hydrosphere, solid Earth, and the biosphere. Which of these spheres are absent, or nearly absent, on the moon? List three processes that happen on Earth but do not happen on the moon because the moon lacks these spheres.

Answer: The hydrosphere and biosphere are not present in the moon.

Explanation:

The biosphere is the living things on the earth's planet which include the all of the microorganisms, plants and animals. In the biosphere, we have reproduction process in which living things reproduce after its kind.

In the