The answer is: "social epidemiology" .
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" <u> Social epidemiology </u> i<span>s the study of the causes and distribution of health, disease, and impairment throughout a population."
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Your answer is going to be D. It narrows blood vessels. It is correct on E D G E N U I T Y.
The correct answer would be option D, Brown stains on teeth.
Short term effect of tar on the body is the brown stains on teeth.
Explanation:
When tobacco burns, it creates a sticky brown substance. This sticky brown substance is called the tar.
When smokers consume things that contain tar in it, then the short term effect of tar on the body is the stickiness of that brown substance, tar, on the teeth.
Tooth Decay, Increased Blood Pressures and Drooling may be the long term effects of consuming tobacco. Tar is produced by the burning of tobacco which damages the mouth by rotting and blackening of teeth, desensitizing the taste buds and damaging the gums.
Due to excessive consumption of tar, the lungs of the user are damaged in the long run.
Learn more about Tar at:
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There are two phases of the cardiac cycle. These phases are diastole and systole. The dicrotic notch is found during systole, specifically ventricular systole.
Systole is the time when <span>left and right ventricles contract and eject blood into the aorta and pulmonary artery.
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Diastole is the time when the ventricles are not contracting or are in a relax mode.