- The symbols used for addition (+) and subtraction (-) have been around for thousands of years but it wasn't until the 16th century that most mathematical symbols were invented. Before this time math equations were written in words, making it very time consuming..
- Tarantula spiders can survive 2 and a half years without food.
- Armadillos have 4 babies at a time and are all the same sex.
- Hawaii officially became apart of the US in 1900.
- Crocodiles are colour blind.
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