7 things we don't know about the ocean
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The ocean covers 70% of the planet, but humans still don’t know very much about it. In this video, Hank Green from SciShow discusses seven mysterious ocean topics.
What equipment is used to record underwater sounds?
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TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.
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- Video created by SciShow
- Lesson Plan created by Emilie Soffe
