Question

1.what is atmosphere
2.which two gases make the bulk of the atmosphere
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Answer 1

Answer:

the mixture of gases that surrounded the earth atmosphere and star are known as atmosphere

2.nitrogen,oxygen

Answer 2

Answer:

Atmosphere refers to the gases surrounding a star or planetary body held in place by gravity. the composition of the earth's atmosphere is about 78% Nitrogen ,21% Oxygen ,0.8% organ with water vapour, carbon dioxide and other gases.

◆ The two gases that make the bulk of the atmosphere are :

• Oxygen (21%)
• Nitrogen ( 78%)