Highlight the three words that name how water vapor enters the atmosphere.

The sun causes evaporation by heating water molecules until they speed up and spread out, entering the air as water vapor . Plants take in water through their roots and it moves up the stem and into the leaves. Transpiration then occurs. Animals, including people, breathe out, or exhale , in the process of respiration .
Highlight the three words that name how water vapor enters the atmosphere.