Do all living things need mates, to produce newborns?

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.

Iwanna go do something with my ideas? ?

During binary fission, what events must occur before the cell splits into two new cells?