May get differences between respiration and burning

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

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

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.