which process allows water to enter the atmosphere?\nevaporation\ncondensation\nprecipitation\nfreezing

Brief Explanations:

Evaporation is the process by which water changes from a liquid to a gas (water - vapor) and enters the atmosphere. Condensation is the change from gas to liquid, precipitation is the falling of water from the atmosphere to the Earth's surface, and freezing is the change from liquid to solid.

Answer:

evaporation