Which is most likely a keystone species?
a
wolves in Yellowstone National Park, which eat elk, who graze on willows, on which beavers depend to build their dams
b
feral cats, which hunt a wide variety of animals, including birds, lizards, rodents, and insects
c
deer, which eat a variety of plants, including shrubs and young trees, and are consumed by large predators like mountain lions, wolves, and bears
d
cane toads in Australia, which were introduced to eat cane beetles, but eat anything and survive in various habitats
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1 answer
a - wolves in Yellowstone National Park, which eat elk, who graze on willows, on which beavers depend to build their dams. Wolves in this ecosystem play a crucial role in maintaining the population levels of elk, which in turn affects the availability of willows for beavers to build their dams. This interconnected relationship makes wolves a keystone species in this environment.