Which Evergreen Shrub Is Indigenous to Australia?
Which Evergreen Shrub Is Indigenous to Australia? Originally from Australia, acacia is an evergreen shrub or tree that is now extensively distributed in tropical and...
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What Is a Yam and Why Is It Good for Us?
What Is a Yam and Why Is It Good for Us? Yam is the swollen, tuber-like root of a climbing plant which is grown for food in many of the warmer parts of the world. Yams...
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Where Do Teeth Come From?
Where Do Teeth Come From? Teeth are formed from specialized cells which produce the three parts of the tooth—root, neck, and crown. The outer coating of the crown is...
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How Fast Does the Hair on Your Head Grow?
How Fast Does the Hair on Your Head Grow? The hair on your head grows about half an inch each month. Your hair does not grow at the same rate throughout the day. It...
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What Makes a Knot in a Piece of Wood?
What Makes a Knot in a Piece of Wood? A knot in a piece of wood is simply a lump, or growth, formed at the point where a branch grew out of the tree trunk. When the...
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