X-rays of high energy and extremely short wavelengths are classified as hard radiation.

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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Author Question: X-rays of high energy and extremely short wavelengths are classified as hard radiation. (Read 23 times)

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