They're the only vein that carries oygenated blood
I would say individuals can adapt to change as this agrees with the theory of natural selection that in any species there are varieties and these can consist of individuals that are better adapted to the environmental conditions so they will thrive and propogate themselves and can result in a new species.
Cause waters wet so the acid from the water is not dry
Your answer is Enamel it is the coating on teeth that helps prevent damage.
I would choose the option D.
D. It remains tightly coiled at the G1 phase.
