Question

2.
of
chemicals (elements & compounds
called air​

Answer 1

Answer:

nitrogen, oxygen, argon,carbon dioxide

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Answer 2

Answer:

Explanation:

The molecules of two different elements, nitrogen and oxygen, make up about 99 percent of the air. The rest includes small amounts of argon and carbon dioxide. (Other gases such as neon, helium, and methane are present in trace amounts.) Oxygen is the life-giving element in the air.