List and describe two lines of evidence that a giant asteroid impact with Earth caused the extinction of the dinosaurs.

Are the earth's ocean floor and continents the same age geologically? why or why not?

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

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