What are the two critical protective functions the Atmosphere provides besides thermal regulation?

Answer

It burns up most incoming meteors and the ozone layer absorbs harmful UV radiation.

The atmosphere acts as a physical shield by incinerating meteors, and its upper layers contain the ozone layer which absorbs dangerous, high-energy ultraviolet radiation.

What are the two critical protective functions the Atmosphere provides besides thermal regulation?
Earthenvironmentsupportsystemlife