In humans, having freckles (f) is dominant to not having freckles (f). having a cleft chin (c) is also dominant to not having a cleft chin (c). which statement is true of the offspring of a cross between parents that are both heterozygous for both traits (ffcc)

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

20 the compound al(nh3)2 has atoms of nitrogen.

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