Answer:
It was established on June 18 of 1981.
The correct answer would be
C.) <span>Polio Vaccination.</span>
The CORRECT answer for this is: number reduction of chromosomes:)
The answer is A. amino acids. Hope this helps!!!
Paleontologists have found fossil evidence of various “walking whales,” semiaquatic whales that show some early stages of the transition from land-dwelling ancestors to today’s familiar fully marine whales. One such “walking whale” is Ambulocetus (am-bew-lo-SEAT-us ...