Answer:
I don't know correct answer but I think it is <em>night time</em> in b point.
Answer:
they probably have a recent common ancestor
Explanation:
Its stabilising. Since the selection pressure is against the extremes which are the normal blood and the sickle cell anaemia.
A T cell, or T lymphocyte, is a type of lymphocyte a type of white blood cell that plays a central role in cell-mediated immunity.
a)121 million gigatons or 121 million billion metric tons" of carbon).
B)The ocean, with around 38,000 gigatons
c)60 gigatons of carbon