Moisture

Nature

Moisture is the presence of a liquid, especially water, often in trace amounts. Moisture is defined as water in the adsorbed of absorbed phase. Small amounts of water may be found, for example, in the air (humidity), in foods, and in some commercial products. Moisture also refers to the amount of water vapor present in the air. The soil also includes moisture.

Source: Wikipedia

Aggravates 
Type 
(G) Very specific problems