The placenta (also known as afterbirth) is an organ that connects the developing fetus to the uterine
wall to allow nutrient uptake, provide thermo-regulation to the fetus,
waste elimination, and gas exchange via the mother's blood supply, fight
against internal infection and produce hormones to support pregnancy.
The placenta provides oxygen and nutrients to growing babies and removes
waste products from the baby's
<span>Which of the following is the best example of positive peer pressure?
</span>
4. Your friends all sign up for a free class at the gym and suggest you sign up for it, too.
Answer:
Most likely to be a heart attack
Explanation:
Call a friend.
Take the bus.
Call for a cab or taxi service.
White blood cells help to fight infection
The blood carries these cells
