TOEFL iBT Listening

Lecture / Conversation

TOEFL · Lecture / Conversation

Listen to part of a lecture and answer the question.

What surprising point does the professor make about beach sand?

Many sand grains originated far inland and were carried to the coast by rivers.Most sand is artificially produced and added to beaches by humans.Sand grains stay the same size during their entire journey.Beach sand forms only from broken seashells near the shore.

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