What is our atmosphere mostly made out of?

Answer 1

Nitrogen- 78%
Oxygen-21%
Other gases (carbondioxide, water vapor....etc) 1%

Answer 2

Clean dry air is a mixture of a number of gases.The principal constituents are as follows:
Nitrogen ----- 78.08 (% by volume)
Oxygen--------- 20.95
Argon------------0.93
carbon dioxide--0.03
Other gases---- Traces.
Besides the above constituents, the air contains lot of particulate matter such as dust,smoke,volcanic dust, radioactive dust etc suspended in it.The other important and most highly variable constituent of the natural air is the water vapour which is meteorologically very important.But it is mostly confined to the troposphere only.
The above composition varies little from place to place on the earth and upto a height of about 100 Kms.Above that level, the molecules and atoms of the nitrogen and oxigen become progressively ionised with a change in the above composition.
Further the atmosphere contains mainly four layers called troposphere, stratosphere,mesoshere and thermosphere with the temperature decreasing and increasing alternatively with height in the above layers.

Answer 3

The atmosphere is composed mostly of nitrogen, around 78%. Around 21% of our atmosphere is composed of life giving oxygen. 1% accounts for all other gases within our atmosphere.

Answer 4

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RE:
What is our atmosphere mostly made out of?

Answer 5

Nitrogen

Answer 6

78% N
21% O
1% other gases

Answer 7

Mostly Nitrogen (78%) the rest is Oxgyen and then there is about 1% of Argon (whatever the hell that is)

Answer 8

Nitrogen - 78.08%
Oxygen - 20.95%
Water vapor - 0 to 4%
Other gasses - <1%

Answer 9

yay thanks