Humidity can best be described as
a. water that falls back to earth’s surface
b. the amount of moisture in the earth’s atmosphere
c. how hot or cold the earth’s atmosphere is at a given time
d. pressure caused by the weight of the earth’s atmosphere

(B) The amount of moisture in the earth’s atmosphere

Explanation:

The humidity is the amount of the water vapor or moisture present in the atmosphere of the earth. In the atmosphere when the more water gets evaporated from the specific area then, the more vapors of the water get rises in the atmosphere.

Then, the humidity of that specific area gets increases. The hot temperature places are more humid as compared to the cold places because heat caused fast evaporation process.

Therefore, Option (B) is correct.