The mountains of the Sierra Nevada play a role in the formation of desert in eastern California and Nevada. What is this an example of?

The correct answer would be - The lithosphere influences the atmosphere and biosphere .

Explanation:

The mountains of the Sierra Nevada play the role of a barrier that blocks the air or wind that brings the clouds filled with water to eastern California and Nevada as it can not pass the mountains and reach the other side of mountains which cause less or no rain to this region.

Rain is a very important aspect for the region to be less diverse in plants and animals as most of them require water but as it is described there is no or very little precipitation so it becomes desert.

This makes it an example of the lithosphere influences the atmosphere and biosphere .

the fossil record provides evidence of a common ancestor to many species.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added