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9YrrG TIL Gray wolves were reintroduced into Yellowstone National Park in 1995, resulting in regeneration of the entire ecosystem [Trophic cascade]. After the wolves were driven extinct regionally nearly 100 years ago, scientists began to fully understand their role in the food web as a keystone species.
nekkb TIL Gray wolves were reintroduced into Yellowstone National Park in 1995, resulting in regeneration of the entire ecosystem [Trophic cascade]. After the wolves were driven extinct regionally nearly 100 years ago, scientists began to fully understand their role in the food web as a keystone species.
Br7RK TIL sperm whales seek out habitats with large communities of bioluminescent plankton, which are not part of the whale's diet. As the plankton's predators (fish) approach the plankton, their glowing alerts the whale. The whale eats the fish. The plankton then turn out their lights.