A million dollars weighs about a metric ton. Hence the expression "a ton of money."
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The cat brain weighs about 30g.
167
Most elephants weigh less than a blue whale's tongue.
442
By weight, Bone is five times stronger than steel.
417
The average person's skin weighs twice as much as their brain.
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Sex burns about 360 calories per hour.
860
A hummingbird weighs less than a penny.
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Dieters who sleep more take off more fat that those who sleep less.
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