On June 5, 20 1 1, Harbin Wetland Festival opened. Wetlands have the functions of regulating climate and beautifying the environment. The reason why air humidity can be adjusted is _ _ _ _ _ _; Nengqi

Wetlands contain a lot of water, and the evaporation of water into steam can adjust the humidity of the air, and at the same time evaporate and absorb the surrounding heat, reducing the temperature of the surrounding air; In addition, due to the large specific heat capacity of water, during the day, water with the same quality absorbs the same heat than sand, and the temperature of water rises less; When the same heat is released at night, the temperature of water is reduced less, which makes the temperature difference between day and night small and can effectively adjust the temperature of the surrounding environment.

So the answer is: water evaporates into steam, the specific heat capacity of water is large, and water evaporates to absorb heat.