- 1 square inch of human skin contains 625 sweat glands.
- 'Babe' was played by over 50 pigs.
- A humming bird flaps its wings up to 90 times a second (5,400 times a minute).
- There are over 7,000 different types of apples.
- Jellyfish have been on Earth for over 650 million years.
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