the sun rotates
o
a. around earth once per year.
o
b. at different speeds along its sphere.
o
c. every 31 days.
o
d. once per year.

B

Explanation: the sun is made of gas, which doesn't all spin together at the same speed like a solid rock would.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation: