2012-12-31

[public] 1.31M views, 16.3K likes, 395 dislikes audio only

CrashCourse

Hank describes the desperate need many organisms have for nutrients (specifically nitrogen and phosphorus) and how they go about getting them via the nitrogen and phosphorus cycles.

Table of Contents:

Nitrogen Cycle 1:46

Nitrogen Fixing Bacteria 2:32

Nitrifying Bacteria 3:24

Denitrifying Bacteria 4:34

Phosphorous Cycle 5:16

Lithosphere 5:27

Plants 5:56

Animals 5:56

Decomposers 5:56

Aquatic & Marine Ecosystems 6:24

Sedimentation & Weathering 6:55

Synthetic Fertilizers 7:23

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