Every living thing on Earth is connected through a single, great evolutionary tree.

Biological Diversity, Butts, and the Tree of Life: Crash Course Biology #18 · 13:09 · Video: CrashCourse · Watch at the source

In short: From microscopic tardigrades to massive sequoias, all life shares a common history. This video explores how evolutionary relationships define the Tree of Life and reveals our own specific place within the planet's vast biodiversity.

The Tree of Life serves as a framework for understanding the connections between all organisms that have ever existed. By mapping these evolutionary relationships, scientists can categorize the diversity of life and clarify how different species relate to one another.

Understanding this tree provides essential context for our own existence, illustrating that humans are part of a larger, interconnected biological narrative rather than isolated entities.

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