D. Answer the following questions.
1. What is the composition of air?
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Explanation:
Composition of air
Oxygen — 21 percent. Argon — 0.93 percent. Carbon dioxide — 0.04 percent. Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor....
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1
Answer:
AIR
It's 78% is covered with nitrogen, 21% oxygen, 1% smoke, carbon dioxide, water vapor etc..
Explanation:
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