Choices:
I. dead organisms.
II. Shade.
III. Greenhouse gases.
IV. Soil loss from wind..
V. Animal diversity.
VI. Greenhouse gasses.
VII. Rain.
VIII. carbon dioxide.
Q: You are presented with the quiz "What do rain forests reduce?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "soil erosion means soil loss through wind" and "soil Erosion Rain forests help to prevent soil erosion and water pollution ". So, what's the best answer to the question?
A:
IV.