Question

Which one of the following is the correct percentage of the two (out of the total of 4) greenhouse gases that contribute to the total global warming?

• A. $N_{2}O$ 6%, $C{O}_2$86%
• B. Methane 20%, $N_{2}O$ 18%
• C. $CFCs$ 14%, Methane 20%
• D. $C{O}_2$ 40%, $CFCs$ 30%

Answer 1

The correct option is C $CFCs$ 14%, Methane 20%

A greenhouse gas, in the atmosphere, is the gas that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming. The primary greenhouse gases in Earth's atmosphere are water vapour, carbon dioxide, methane and nitrous oxide.

Composition of greenhouse gases are

CO${}_2$ - 56%

CFCs - 14%,

Methane - 20%

Nitrous Oxides - 8%,

Water Vapours - 2%.

Therefore, the correct answer is option C.