The sex of a baby crocodile is determined by the temperature in the nest and how deeply the eggs are buried.

The average housefly only lives for 2 or 3 weeks.

In July 1874, a swarm of Rocky Mountain locusts flew over Nebraska covering an area estimated at 198,600 square miles. It is estimated that the swarm contained about 12.5 trillion insects. These insects became extinct thirty years later.

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