If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
Main content
Unit 3: Where is biodiversity found?
About this unit
Explore how life is found almost everywhere on Earth, but is not distributed evenly. And learn why the clumped distributions of species are the result of a wide variety of both natural and human-driven factors.