Which statement best describes a keystone species?
A. It has little genetic variation
B. It has an extremely high population
C. It remains unaffected by all environmental changes
D. It has a strong influence on the ecosystem
E. It's the first species to populate a new ecosystem
A keystone species is an organism that contributes to an ecosystem. The ecosystem would be drastically altered or non-existent without its keystone species. I hope I helped! ^-^
