Freshwater Environments Questions
1. What living and nonliving factors define a lake’s shallow-water
zone?
a. Shallow water is enough for sunlight to reach the bottom.
b. Often has rooted plants growing in the buddy bottom.
c. May have floating plants and algae.
d. Have insect larvae around the plants.
e. Might have ducks and small mammals.
2. What roles does phytoplankton play in an aquatic environment?
a. Phytoplankton are the “grass” of the lake environment and
are eaten by microscopic animals.
3. How are lake and river organisms different?
a. Standing-water lake organisms don’t have to deal with
flowing water or currents.
b. Organisms that live in flowing rivers have to be good
swimmers or be able to hook on to rocks.
c. In the lower parts of rivers, the river water is slower.
d. Plants and animals in the slower waters are more like lake
organisms.
4th Grade
Environments
Investigation 3