Answer:
B. How efficient can an engine be, in theory?
Explanation:
Answer:
what prat of a plant make food
No human inhabitants because Polar vortex win lower temperatures in the Antarctic .
Explanation:
The Cenozoic period saw the demise of non-avian species of dinosaur and the emergence of humans. It is characterized at the late cretaceous period period of other main species and the end of the Pleistocene Epoch by the Cretaceous-Tertiary mass extinction event. The age of fresh start however is in this era.
