AP BIOLOGY

Detailed explanation-1: -Condensation is the process by which water vapor in the air is changed into liquid water; it’s the opposite of evaporation. Condensation is crucial to the water cycle because it is responsible for the formation of clouds.

Detailed explanation-2: -Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.

Detailed explanation-3: -As air rises drier air is added (entrained) into the rising parcel so both condensation and evaporation are continually occurring. So, cloud droplets are constantly forming and dissipating. Therefore, clouds form and grow when there is more condensation on nuclei than evaporation from nuclei.