9. the extinction of many species leads to the burst of evolution by
a causing volcanic eruptions
b. producing global climate change.
c. leaving open habitats.
d. making the extinct species more fit.

c. Leaving open habitats.

Explanation:

The disappeareance of some species leads to the rise of new species that are better adapted to the changing circumstances that are responsible for the extinction of the former. After the extinction of the dinousaurs, usually animals with large bodies, the mammals came to dominate and expanded on Earth. They evolved and adapted to the new environments and changes.