Question

and other
about 16 to 23 kilometre distance. Three atoms of oxygen com
molecule
. This layer blocks the harmful ultra-violet rays. Th
in protecting us from skin cancer.
NOW ANSWER THESE
1. Air is a mixture of gases. What are they?
2. What is ozone layer? What is its importance?
3. Which are the gases, which have the maximum
2 OXYGEN​

Answer 1

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oxygen is the answer.