Can I get some help with this please?

When species lose their habitats they may..

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.