Can you believe that the human lungs have the same surface area as a tennis court? (8/15)


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Written by danny

The flea moves faster than a space shuttle. It can jump over 3,14 inches per millisecond. His acceleration is 50 times faster than that of a spaceship. (7/15)

Genetically, men have a predisposition to having a boy or a girl. If men have many sisters, they will have girls more often and vice versa. (9/15)