Lack of moisture in the air causes 
humidity cold Pollution sweating erosion Drought heat flooding
A B C D E F G H
Drought can be caused by less than normal rainfall.
lack of moisture in the air causes Drought
Lack of moisture in the air causes  (A) humidity (B) cold (C) Pollution (D) sweating (E) erosion (F) Drought (G) heat (H) flooding