The correct answer would be
C.) <span>Polio Vaccination.</span>
Answer:
population that is unchanging
Explanation:
<span>Which term names the offspring of a cross between two true breeding parents is First Generation...B</span>
The most recent and arguably best-known, the Cretaceous–Paleogene extinction event, which occurred approximately 66 Ma (million years ago), was a large-scale mass extinction of animal and plant species in a geologically short period of time.
The Gram-positive bacteria have a thicker cell wall than the Gram-negative bacteria.
