SCIENCE FACTS PART-04
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21. Moths have no stomach.
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22. Nearly a third of all
bottled drinking water purchased in the US is contaminated with bacteria.
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22. On average, Elephants
sleep for about 2 hours per day.
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23. Oxygen, carbon, hydrogen
and nitrogen make up 90% of the human body.
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24. Rats multiply so quickly
that in 18 months, two rats could have over 1 million descendants.
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25. Sea otters have 2 coats
of fur.
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26. Sharks are immune to
cancer.
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27. Shark's teeth are
literally as hard as steel.
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28. The animal with the
largest brain in relation to its body is the ant.
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29. The average human
produces a quart of saliva a day about 10,000 gallons in a lifetime
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30. The average person has
100,000 hairs on his/her head. Each hair grows about 5 inches (12.7 cm) every
year.
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31. The earliest cockroach
fossils are about 280 million years old.
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32. The embryos of tiger
sharks fight each other while in their mother's womb, the survivor being the
baby shark that is born.
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33. The heart of giraffe is
two feet long, and can weigh as much as twenty four pounds.
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34. The largest eggs in the
world are laid by a shark.
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35. The oldest known fossil
is of a single-celled organism, blue-green algae, found in 3.2 billion
year-old stones in South Africa.
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36. The oldest multicellular
fossils date from ~700 million years ago.
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37. There are 60,000 miles
(97,000 km) in blood vessels in every human.
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38. The first animal go into
the space is a dog.
39. 20/20 vision means the
eye can see normally at 20 feet. 20/15 is better; the eye can see at 20 feet
what another eye sees at 15 feet.
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40.70% of the dust in your
home consists of shed human skin
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