Question

Fill in the blanks.

(a) To prevent the evaporation of water from lakes ………… is sprayed on the surface of the water.

(b) An increase in temperature causes ………… evaporation.

(c) The proportion of dissolved ………… in polluted water is low.

Answer 1

(a) To prevent the evaporation of water from lakes cetyl alcohol is sprayed on the surface of the water.

(b) An increase in temperature causes faster evaporation.

(c) The proportion of dissolved oxygen in polluted water is low.