Question

how does water return to earth from the atmosphere?
through precipitation
through evaporation
through groundwater seepage
through transpiration
what does warm air typically hold more of compared to cold air?
oxygen
nitrogen
carbon dioxide
water vapor
what is the term for the process of water changing from liquid to vapor?

Explanation:

First Question: How does water return to Earth from the atmosphere?

Precipitation (rain, snow, etc.) is the process where water falls from the atmosphere to Earth. Evaporation is water turning to vapor (going to atmosphere), groundwater seepage is water moving underground, and transpiration is water loss from plants. So the correct option is the one about precipitation.

Warm air has more capacity to hold water vapor due to higher kinetic energy allowing more water molecules to stay in gas form. Oxygen, nitrogen, and carbon dioxide amounts don't vary much with air temperature in this context. So warm air holds more water vapor.

Evaporation is the process where liquid water turns into water vapor (gas). Other processes like condensation are gas to liquid, sublimation is solid to gas, etc. So the term is evaporation.

Answer:

A. Through precipitation

Second Question: What does warm air typically hold more of compared to cold air?