This video about the USA says about itself:
How Wolves Change Rivers
13 Feb 2014
When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable “trophic cascade” occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains in this movie remix.
Reblogged this on "OUR WORLD".
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Thanks so much for your reblog!
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My pleasure. 🙂
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Excellent!!
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Thank you! I hope to find more like this 🙂
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I share you hope!!! 🙂
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