5. about 99% of the atmosphere is composed of
a. argon and carbon dioxide.
b. oxygen and carbon dioxide.
c. nitrogen and water vapor.
d. nitrogen and oxygen.

i need this answer before aug. 31st

Write a 150word essay describing the effect of people's activities on the environment in the region.

What can happen to solar radiation when it enters earth’s atmosphere? check all that apply. it is absorbed by earth. it is reflected by clouds. it is reflected by glacial ice. it is condensed into visible light. it is amplified by water molecules.

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