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

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a