Question

What is A% and B% as depicted in the diagram showing the composition of the atmosphere 

Options

• A: 72 B: 27

• A: 77 B: 22

• A: 78 B: 21

• A: 79 B: 20

Answer 1

A: 78 B: 21

Explanation:

In the diagram showing the composition of the atmosphere:

• A% (Nitrogen) = 78%

• B% (Oxygen) = 21%

These are the two most abundant gases in the Earth's atmosphere, with other gases like argon, carbon dioxide, and water vapor making up the remaining 1%.