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Unit: Intro to biology

Check your understanding of the basics of biology!

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Biologists study life at many scales, from individual cells to organisms to the entire biosphere (planet Earth). Jump in to learn more about the key themes of biology and the properties of living things.
How do biologists study the world around them? Learn about the scientific method, experiments, and other tools scientists use to test their ideas and make discoveries. You might want to use some of them yourself!

About this unit

New to biology? You're in the right place! Start your biological journey here.