Question

not all gases in the atmosphere are created equal! some gases, like carbon dioxide and water vapor, trap heat from the sun. what would happen if these two gases disappeared?
plants would grow more rapidly, increasing oxygen levels.
animals on the earth would grow larger and larger.
life on earth would grow faster, increasing biodiversity.
the earth would become too cold for life to exist.

Explanation:

Carbon dioxide and water vapor are greenhouse gases. They trap heat from the sun, keeping the Earth warm enough for life. Without them, the Earth would lose this heat - trapping ability. Plants need carbon dioxide for photosynthesis, but without the warming effect, the overall environment would be inhospitable. Animals and biodiversity depend on a stable temperature range. A lack of these gases would lead to extreme cold.

Answer:

The earth would become too cold for life to exist.