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:

The Earth's atmosphere contains greenhouse gases like carbon dioxide and water vapor. These gases trap heat from the sun, a process known as the greenhouse effect. This helps to keep the Earth warm, which is essential for life as it allows for liquid water (a key requirement for life as we know it) to exist on the planet's surface.

• Filtering out oxygen is incorrect because oxygen is necessary for most life forms (aerobic organisms) to respire.
• Increasing UV radiation is harmful. The ozone layer in the atmosphere actually absorbs a significant amount of UV - B and UV - C radiation, protecting life from excessive UV exposure which can cause skin cancer, damage DNA in organisms, etc.
• The atmosphere is a layer of gases, not a solid shield.

Answer:

It keeps Earth warm.