Health & Humanity: Ask the Fact Monster Questions
Updated February 23, 2017 | Factmonster Staff 
Health & Humanity
- What are the names of all the layers of skin and what are some of their properties?
- How many quarts of air does a human being breathe every minute?
- Can you please tell me how much the human skin of a person's body alone weighs?
- What causes gray hairs to sprout as a person grows older?
- Do men and women have the same number of ribs?
- What's the most common blood type?
- What do the two numbers in a blood pressure reading mean?
