Which factor may begin an ice age? select all that apply

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.

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

The body of water found at number 4 on the map above is the