Answer:
Oxygen and carbon dioxide flow through the blood in the placenta. Most of it goes to the heart and flows through the baby's body. At birth, the baby's lungs are filled with fluid. ... Increased oxygen in the lungs causes a decrease in blood flow resistance to the lungs.
A colorless, sweet, viscous liquid formed as a byproduct in soap manufacture. It is used as an emollient and laxative, and for making explosives and antifreeze.
<span>The leaf exerts a force on the sidewalk; the sidewalk exerts a force on the leaf.</span>
A. Immune system
It helps our bodies fight everything that comes in our path.
