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Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Coral reefs are influenced by sea surface temperatures. Coral reefs are influenced by sea surface temperatures.
Shark skin under a microscope Shark skin under a microscope
West nomogram for estimation of surface areas. West nomogram for estimation of surface areas.
Winds Aloft and Near the Surface: Gradient Flow Winds Aloft and Near the Surface: Gradient Flow
Using both hands, gently but firmly grasp the skin over a spot on the upper back, and lift the skin ... Using both hands, gently but firmly grasp the skin over a spot on the upper back, and lift the skin ...
Video: What is an ecosystem?

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