AP BIOLOGY

Detailed explanation-1: -A pond is usually smaller and shallower than a lake. Because they are shallower than lakes, ponds have plants growing on the bottom of them from one side to the other. Most ponds are less than six or seven feet deep.

Detailed explanation-2: -Ponds are particularly small shallow lakes, typically less than 1 hectare in area. Shallow systems are also defined as polymictic, implying that the entire water column circulates continuously or for long periods and that long-lasting thermal stratification in summer is lacking.