Answer:
The atom
Explanation:
The basic unit of matter is the "atom." All matter consists of millions of atoms that within the atom contains electrons, protons, and neutrons. Knowing how many electrons, protons, and neutrons a atom has can determine the element which are substances that are on the periodic table.
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Answer:
The three specialized systems routes are the coronary circulation, which brings blood to the myocardium; the portal circulation, which takes blood from the organs of digestion to the liver through the portal vein and the fetal circulation in which the fetus obtains oxygen and nutrients from the Mother's blood.
Explanation:
I majored in Health