Answer:
78 percent of atmosphere- nitrogen
21 percent of atmosphere- oxygen
absorbs most ultraviolet rays- ozonosphere
atmospheric weather- thermosphere
starts seven miles above the earth- troposphere
layer composed of layers- ionosphere
important is for radio wave reflection- stratosphere
trapping of heat by Earth's atmosphere- stratosphere greenhouse effect
Step-by-step explanation:
I'm not 100% sure but I really hope this helps.