Biology

A keystone species is one whose impact on its ecosystem is disproportionately large compared to its abundance or biomass. The removal of a keystone species can significantly disrupt the structure and biodiversity of the ecosystem.

A.Sharks are considered a keystone species in marine ecosystems. As apex predators, they regulate the populations of other species, preventing certain organisms from becoming too dominant. This balance helps maintain healthy marine ecosystems.

B.Grizzly bears are another example. They affect their environment by contro...