What Causes Warts?
What Causes Warts? Warts are skin infections caused by tiny germs called viruses of the human papillomavirus (HPV) family that get into your
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Germs
What Is a Fever?
Fever is a body temperature that is higher than normal. (If your body temperature is higher than 98.6 degrees Fahrenheit when you are sick,
How Does a City Purify Its Water?
How Does a City Purify Its Water? Water in its natural state is often dirty, and usually must be purified to be safe for consumption. After
Why Is Milk Pasteurized?
Why Is Milk Pasteurized? Milk is an excellent medium for microbial growth, and when stored at ambient temperature bacteria and other pathoge
Why Do You Sneeze?
Usually you sneeze to get rid of an irritation in the air passage of your nose. Various things can cause a sneeze. You may have dust up your