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Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.