Answer:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Your circulatory system delivers oxygen-rich blood to your bones. Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain internal stability and balance, otherwise known as homeostasis
Explanation:
Chimpanzees. they held the virus and their exposed blood gave it to humans
Answer:
Girls' need for iron increases due to menstruation, but boys do not need extra iron.
Explanation:
C. H<span>ow hard a person works to do an activity.
Intensity has to do with effort. If a person works hard than they are intense, if vise versa than they are not intense.</span>
Wolff-Parkinson-White Syndrome (WPW) describes an arrhythmia caused by an electrical activity trapped in a circular pattern.
A form of congenital heart defect known as Wolff-Parkinson-White Syndrome appears when an additional portion of heart muscle creates a different electrical conduction pathway between your heart's upper and lower chambers. Then, both the additional pathway and the regular pathway are used by your heart's electrical impulses. This makes the heart beat fast because it forces the impulses to move quickly and in a circular manner around the heart.
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