Question

28) Which gases are necessary for the survival of life on the earth?
a) ozone & oxygen
b) oxygen & carbon dioxide
c) oxygen & nitrogen
d) none​

Answer 1

Answer:

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Which gases are necessary for the survival of life on the earth?

a) ozone & oxygen

b) oxygen & carbon dioxide ✔️✔️

c) oxygen & nitrogen

d) none

Answer 2

Answer:

c) oxygen & nitrogen

Explanation:

Hope It Helps;)