Question 5 • 2026 Summer 305 CR_2002040-M/J Comprehensive Science 1
The atmosphere supplies oxygen, and it causes many meteoroids to burn up before they reach Earth’s surface. Its pressure and heat-trapping gases help keep conditions suitable for liquid water, while the ozone layer blocks much of the Sun’s harmful ultraviolet radiation. The atmosphere does not reliably purify rain or snow; precipitation can contain pollutants.
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