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Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Eyespots on the wings of the Citrus Swallowtail (Papilio demodocus) are part of its defense Eyespots on the wings of the Citrus Swallowtail (Papilio demodocus) are part of its defense
Chinese workers on a railway in the far West. “Without them,” Leland Stanford, president of the Cent Chinese workers on a railway in the far West. “Without them,” Leland Stanford, president of the Cent
Defense Mechanisms Cont. Defense Mechanisms Cont.
Defense Mechanisms Defense Mechanisms
Defense Mechanisms Defense Mechanisms
Defense and counter defense. Defense and counter defense.
Video: Phases of mitosis

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