Red blood cells reproduce using:

budding
mitosis
sexual reproduction

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

answer; (a) medicalized;