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Watch Crash Course Biology Season 2 Episode 20 Online

  • 1.5/10
  • COUNTRIES: United States of America
  • Subtitles: English

Despite the diverse appearance and characteristics of organisms on Earth, the chemicals that make up living things are remarkably similar, often identical. In this episode of Crash Course Biology, we’ll look at the building blocks of the four major classes of biomolecules, how those join up to form macromolecules, and how a team of six atoms forms the vast majority of living matter.