Name two examples of catastrophic events which could lead to a mass extinction?

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.

The picture shows a location in india that is very dry and arid. notice the tall mountains in the background; you can find high amounts of vegetation on the other side of the mountains. which statement is most likely true for this area?

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity