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Author Question: In the 1920s, the development of practical radio communication was furthered by A. its ability to ... (Read 184 times) |
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.