Question

6. An Indian tree having extraordinary
quality of providing oxygen round the
clock
8. Gas present in atmosphere occupying
only 0.03% by volume
11. Outermost layer of atmosphere
12. Mixture of many gases
16. An indian tree valued highly for
medicinal properties
18. Gas protecting us from harmful sunrays​

Answer 1

Answer:

6.avenue trees

8.SO2

11.stratosphere

12.earth

16.ashwagandha

18.ozone