Yellow bone marrow contains a large percentage of fat.
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Answer:
Nicotine is a dangerous and highly addictive chemical. It can cause an increase in blood pressure, heart rate, flow of blood to the heart and a narrowing of the arteries (vessels that carry blood). Nicotine may also contribute to the hardening of the arterial walls, which in turn, may lead to a heart attack.
Explanation:
Answer:
True
Explanation:
Your body breathes in oxygen and breathes out carbon dioxide
