In both of these biomes, the life forms or biosphere, are limited greatly by the interaction or lack of interaction with another of Earth's spheres. What sphere is that?

It interact together with the physical aspects of the earth:

Lithosphere is the solid surface layer of the Earth.

Atmosphere is the layer of air that stretches above the lithosphere.

Hydrosphere is consist of the Earth’s water on the surface, in the ground, and in the air ...