Physics, 23.02.2021 19:10 Akkenson17871

Wolves were reintroduced to Yellowstone National Park in 1995. This keystone species restored the park's ecosystem. What is the ecological value of a keystone
species?
They decrease the number of unwanted species in an ecosystem.
They prevent the ecosystem from changing and growing.
They influence the survival of many other species in an ecosystem.
They protect land and water resources within the ecosystem.

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