Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
Medication errors are three times higher among children and infants than with adults.
Survivorship curve for the North American beaver.
The American Lion was one of the abundant Pleistocene megafauna, a wide variety of very large mammal
Max Weber (1864–1920) was another early sociologist who left a profound impression on sociology. ...
The hatred and vengeance of adults become the children’s heritage. The headband of this 4-year-old ...
No payments were made on a $2,598 loan during its three-year term. What was the annually ...