17.Water bears, or Tardigrades, are typically 0.5 mm in length and can survive virtually anything. Even the vacuum of space.
18.Basically anything that melts can be made into glass. You just have to cool off a molten material before its molecules have time to realign into what they were before being melted.
19.The critically endangered Kakapo bird has a strong, pleasant, musty odour which allows predators to easily locate it. Hence, it is critically endangered.
20.In 1903 the Wright Brothers flew for the first time. 66 years later, man landed on the Moon in 1969.
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