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Answer:
Q .1 = c option ....
Q.3 = i) ultraviolet rays of sun
ii) O2 and O3
Q .4 ) 2r
Q.5 ) viruses are on the borderline of living and non-living ....
I don't know question 2 ....
sorry!!!!!!
Answered by
1
Answer:
1-d
2-c
3-chlorofluro carbons,o3 and o2
4-b
5-c
Explanation:
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