The Paleogene period lasted. a
10, 000 years
b
2.8 billions year
c
2 millions year
d
43 millions year

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided