A period of prolonged continental glaciation often indicates which phenomenon? A)
An ice age
B)
An asteroid impact.
0)
A volcanic eruption
D)
A prolonged drought.

Which of the following energy sources is not an example of renewable energy? a. a wind turbine farm b. a clean-burning, coal-fired electric plant c. a hydroelectric dam d. a solar panel mounted on a home

He resistance of a liquid to flowing is called

How do the absence of sunspots affect earth climate