What can be used as evidence showing that the earth is changing over time ? Erosion caused by glaciers

In a cladogram' when does a group of organisms branch off

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

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration