TOEFL Listening: ETS-TOEFL听力机经 - O974GN1CO4XS82B2P$

What does the professor emphasize about the Amazon Rainforest? A. Its fertility depends partly on dust from the Bodele depression. B. It has an important effect on weather conditions in the Sahara. C. Its climate is greatly affected by sand from the Sahara. D. It receives Bodele dust at a constant rate throughout the year.