Balsa wood is classified as a hard wood!
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Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Diamonds can be shattered with a hammer.
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The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
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One third of the electricity produced on earth is used to power electric light bulbs!
75
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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