Waves that must travel through
a medium are

a. mechanical.
b. electromagnetic.
c. frequency.

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

What must be true for natural selection to heppen

Ecology can best be described as the study of what