Which statement is true about impact craters?

a.   impact craters form when stars collide with planets.

b. they are caused by volcanoes.

c. they only exist on the moon.

d. earth has impact craters

What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex