Question

2.
Explain how oxygen gets replenished in air.​

Answer 1

Answer:

Oxygen is replenished or released in nature when green plants make the use of Carbon Dioxide to perform photosynthesis. During day time, atmosphere prevents most of the heat to pass through the earth's surface. During night time, inversely, it prevents the radiation to escape through the earth's surface.

Explanation:

Answer 2

Answer:

breathing

burning fire and used by motor vehicle

cutting plants on a large scale