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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
The human body produces and destroys 15 million blood cells every second.
Your heart beats over 36 million times a year.
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