Which are biotic factors in an american alligator's environment?

choose all answers that are correct.

a.
temperature of the water

b.
amount of oxygen gas in the water

c.
type of grass needed for nests

d.
number of available mates

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one