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When the ocean levels fell, exposed

land served as natural bridges that connected continents previously

separated by water. The land bridges allowed humans and other animals

to spread around the planet. It now seems that the end of Quaternary

may be defined by the rise of human civilization.

By Amy Lee/아이엘이 서래초 5-5이지예

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Q: How did falling ocean levels lead to the spread of humans and other animals on Earth?
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