What Is Dirt Made Out Of?

A single tablespoon of soil contains more organisms there are people on Earth.

What is dirt made out of? - Big Questions (Ep. 15)

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Key Facts In This Video

  1. Soil and dirt aren't the same thing. 00:14

  2. Around 45 percent of soil consists of three main components. 00:51

  3. In the U.S. alone there are about 50,000 different types of soil. 01:24

Written by Curiosity Staff February 9, 2015