What does the narrator notice outside the house before he goes in? a fissure or crack in the wall
a dead bird in a tree
curtains twitching
an alligator in the moat

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.

Which of these transport mechanisms moves glucose from the blood into a cell? active transport diffusion facilitated diffusion osmosis

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic