What is the relationship between the development of surface epithelium and the presence of a scab

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

the animal that would be cutest if scaled down to the size of a cat? elephant

the electromagnetic energy from the sun arrives in the form of visible and invisible light.