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Layer of atmosphere

knickolas amani devonte tyquan

what was early atmosphere of earth like (its composirion)?

80% water vapor 10% carbon Dixoxide 5 to 7% hydrgen-sulfur  no oxygen

what is composition of today atmopshere (2main elements)?

nitrogen and oxygen

which layer of the atmoshere is where weather and clouds occur?

stratopshere

which layer of the atmosphere is where the jet sstream and ozone layer are ?

tropsphere

the ionosphere and exosphere are both contained in which layer

thermosphere