- Dark green lettuce leaves are more nutritious than lighter ones.
- Giraffes can grow more than 18 feet tall.
- When a member of a whale group is sick or injured, other whales will push it up to the surface of the water to help it breathe.
- The Earth weighs 6,588,000,000,000,000,000 tons.
- The Amazon rainforest produces half the world's oxygen supply.
- Cats can jump up to 7 times their tail length.
- If you filled a matchbox with gold it could be flattened into a sheet the size of a tennis court.
- There is no rice in rice paper.
- The tea bag was invented in 1908.
- Tennis was originally played with bare hands.
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