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.
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The average office desk has 400 times more bacteria on it than a toilet.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Angiosperm flowers and fruits
Spectra of a Metal-Poor and a Metal-Rich Star
Why the Poor Need Children
Localizing the Source of High-Frequency Sounds
Check heat source for temperature. Evaluate the amount of heat given off from the source using your ...