Question

According to the graph, which statement is

true?
All others (trace)
- Carbon Dioxide
(.03%)
Argon (.9%)
A. Nitrogen is the most abundant
B. Oxygen is the most plentiful gas.
Oxygen 21%
C. Argon and carbon dioxide are
represented in equal proportions
D. The atmosphere is composed of
only four gases
Texas Science & Assessment Image Earth Atmosphere

Answer 1

A. Nitrogen is the most abundant .

B. Oxygen is the most plentiful gas about 21% by volume.

Step-by-step explanation:

Nitrogen is the most abundant gas present in the atmosphere about 78 % by volume while the second most abundant gas is oxygen which is about 21 % in the atmosphere which is used by the living organism for breathing and energy production. Nitrogen is used by the plants for the production of amino acids and enzymes formation. Carbon-dioxide is present in a very low amount about 0.03 % in the atmosphere which is used by the plants during photosynthesis process.