Which two statements describe the Cenozoic era? A. It is the current era.
B. It is also known as the Age of Dinosaurs.
C. It was lifeless with many volcanoes.
D. It is also known as the Age of Mammals.

The desert expands by hundreds of square miles each year.

The fact that similar fossils are found on both sides of the ocean is evidence of: a. global positioning. b. magnetic reversal. c. continental drift. d. oceanic drifts. select the best answer from the choices provided a b c d

High human population have had a negative effect on what issue? a. demand for consumer goods b. ability to staff armies c. business profits d. biodiversity