Nitrogen Phosphorus Cycles: Always Recycle Part 2 Crash Course Ecology, 9

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. Like Crash Course Follow Crash Course 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 Decompose