Biomagnification in food webs, energy pyramids / trophic levels

https://www.youtube.com/watch?v=TZk6vcmLcKw

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Biomagnification: ocean mercury

https://www.youtube.com/watch?v=8W_ywzhkR90

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Deep-Sea Hydrothermal Vents: ecosystem with CHEMOSYNTHESIS, not PHOTOSYNTHESIS!

https://www.youtube.com/watch?v=8W_ywzhkR90

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Population dynamics

http://www.youtube.com/watch?v=s4Ty2Oo7MnI

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Deer population research

https://www.youtube.com/watch?v=7nr9rQpm2A4

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Snake population studies: pit tags

https://www.youtube.com/watch?v=5DR50IgvE7g

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Caribou: domino effect of climate

https://www.youtube.com/watch?v=fk2pRDX4DsY

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Wolves: keystone species that control rivers

https://www.youtube.com/watch?v=ysa5OBhXz-Q&t=154s

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Predator Importance: Yellowstone wolves, elk

https://www.youtube.com/watch?v=SAGEXDlUHDE

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Terrestrial biomes

https://www.youtube.com/watch?v=RFEV-hiP2gQ

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A silly version of the Nitrogen Cycle!

https://www.youtube.com/watch?v=tSzLQojOItg

What's this item about? What makes it interesting? Write a catchy description to grab your audience's attention...

Nitrogen cycle!

https://www.youtube.com/watch?v=PfqvACMyg68

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The carbon cycle!

https://www.youtube.com/watch?v=CLqFUI2Pvlc&t=21s

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