Question

and --
----- are found only in the troposphere layer.
OPTIONS
Mark for Review
AO
The water vapour and dust particles
ВО
Oxygen and nitrogen
СО
Hydrogen and helium
Ozone and argon​

Answer 1

Explanation:

Nitrogen and Oxygen

hope it helps you

Answer 2

Here from your options, answer is oxygen and nitrogen, else there is  argon, water vapor, and carbon dioxide.