Why are rivers less productive than swamps? A. A swamp gets very little sunlight.
B. The water flow in rivers is too high.
C. A river is much smaller than a swamp.
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D. A swamp has very stagnant water.

Which animal group is the largest and contains more species from all the other living groups combined? is it mammals or

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Chicken pox and hepatitis are bacterial diseases. true or false?