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

D.) It has a strong influence on the ecosystem

Explanation:

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! ^-^

after making a punnet square using bv bv bv bv you will find that the ratio will be 9: 7 or a 128.6% probability.

hope this