Question

which is one way that earths atmosphere supports life? it filters out oxygen. it keeps earth warm. it increases uv radiation. it provides a solid shield.

Explanation:

Oxygen is essential for most life forms, so filtering it out would not support life. The atmosphere does not increase UV radiation; in fact, the ozone layer in the stratosphere absorbs harmful UV rays. The atmosphere is a gaseous layer, not a solid shield. The greenhouse effect of the atmosphere (trapping heat) keeps Earth warm, which is crucial for maintaining temperatures suitable for life.

Answer:

It keeps Earth warm.