Ph 3
me 2
em 2
so 3
sp 2
en 3
steps:
start on improve me(mental) project. and ..
I am too tired to continue my answer..
The placenta develops within the first couple of weeks of pregnancy. The placenta is the lifeline of the fetal body and soon after the placenta is developed and in place, it begins starting to absorb nutrients for the developing fetus. This all occurs in the first trimester.
The <u>concentration</u> of a solution is the measure of how much solute is dissolved in a given quantity of solvent.
B. is your best answer
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