1. the human brain uses the same amount of a power as a 10 watt electric bulb.
2. the normal kidneys contains 2 million tiny blood filters which filter 50 gallons of blood every day.
3. magnesium weighs more after it has been burned. the ashes are heavier than the metal.
4. the strips of zebra are as individual as the figure prints of a human being. no two zebras are striped exactly alike.
5. sparrows feed their young one about 300 times a day.
6. one gram of poison of king cobra can kill about 150 men.
7. dolphins sleep with their one eye open.
8. the caterpillar has 2000 muscles; man has only 656.
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