FISH levels and low estrogen levels.
I would assume that it would be A
Because technically there is no such thing as cold
all that exists is heat
this is because heat is the rapid movement of particles, made by friction (to understand why you must delve into physics and some chemistry)
so, when you feel cold, it's really the absence of heat
so instead of "keeping the cold out", which makes no sense at all scientifically, insulation keeps the heat in.
as a side note
the feeling of cold is produced when you come in contact with an object (yes, air counts) that has less heat, or energy, than you do, You feel cold because heat (energy) from your body is being transferred to the environment. This ABSENCE OF HEAT in your body is why you feel cold
B, Provide nutritional support to the embryo. It is not D, as the breasts are not part of the female reproductive system. It isn't C because during pregnancy, fetal and maternal blood do not mix. It also isn't D since women do not produce sperm.
The answer is both A and C. The coastlines that ideally experience high tides are places that are much nearer or opposite against the moon. The reason behind this is that the moon has its own gravitational field that pulls the earth towards itself. This makes high tides or low tides. Basically, there are two high tides and two low tides occuring at the same time. This is due to the varying forces that the moon does depending on the water's position on earth.