Biological term for the germ layer that gives rise to the nervous system​

In which situations is the principle of cross-cutting relationship useful in determining relative age?

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

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