Which of the following actions would decrease global warming? Select one:
Decreasing the amount of methane in the air.

Increasing the amount of oxygen in the air.

Increasing the amount of water vapor in the air.

Decreasing the amount of nitrogen in the air.

Decreasing the amount of methane in the air

Explanation:

Methane traps heat inside the earth's atmosphere. It allows the heat to enter, but not exit, therefore making the earth warmer.

Decreasing the amount of methane in the air

Explanation:

Methane is a powerful greenhouse gas, which absorbs the sun's heat and doesn't allow it to escape therefore contributing to global warming

the correct option is option a