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Some people can tell what time it is by looking at the sun. But I have never been able to make out the numbers.
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We say the cause of perfume disappearing is evaporation. Evaporation gets blamed for a lot of things people forget to put the top on.
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To most people solutions mean finding the answers. But to chemists solutions are things that are still all mixed up.
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In looking at a drop of water under a microscope, we find there are twice as many H's as O's.
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Clouds are high flying fogs.
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I am not sure how clouds get formed. But the clouds know how to do it, and that is the important thing.
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Clouds just keep circling the earth around and around. And around. There is not much else to do.
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Water vapour gets together in a cloud. When it is big enough to be called a drop, it does.
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Humidity is the experience of looking for air and finding water.
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We keep track of the humidity in the air so we won't drown when we breathe.
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