Which age pyramid has the largest base of pre-reproductive population ?

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

Individuals do not compete directly for resources, but are prey for the same predator

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