1 Season
12 Episode
Crash Course Ecology - Season 1 Episode 9 Nitrogen & Phosphorus Cycles: Always Recycle! Part 2 (2013)
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.
- Country : United States of America
- Genre : Documentary
- Studio : YouTube
- Director :
- Cast : Hank Green
