What’s the Meaning of “o” in “o’clock”?
What’s the Meaning of “o” in “o’clock”? “O” stands for “of the” clock. When we refer to an hour as “o’clock,” we mean that it...
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Why Do Cats Purr?
Why Do Cats Purr? Most people think that cats purr to show pleasure or contentment. Purring is a kind of low continuous rattling hum, but it has nothing to do with a...
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How Do Frogs Breathe under Water?
How Do Frogs Breathe under Water? Under water, frogs breathe through their skins. A frog is an amphibian. That is to say it lives both on land and in water. It has...
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