Hank introduces us to ecology – the study of the rules of engagement for all of us earthlings – which seeks to explain why the world looks and acts the way it does. The world is full of things, animate and not, that interact with each other all the time, every day, since life began on this planet, and these interactions depend primarily on just two things… Learn what they are. Crash Course Biology takes its final journey out of the body and into the wider world.

Are you eager to learn more about ecology? Good news! Crash Course Ecology has 12 episodes that you can watch here:
https://www.youtube.com/watch?v=P3wP8v84uqs&list=PL8dPuuaLjXtNdTKZkV_GiIYXpV9w4WxbX

Contents
1) Ecological hierarchy 02:01:2
a) People 02:12
b) Community 02:26:1
c) Ecosystem 02:50
d) Biome 03:22:1
e) Biosphere 03:51

2) Key ecological factors 04:07
a) Temperature 05:06:1
b) Water 05:37

3) Biome type 06:03:1

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