Because most of the time they have insulation in them so that it keeps your house warm.
Http://www.innerbody.com/image/musc01.html
YOU CAN FIND YOUR ANSWER HERE.
Answer:
There exists a fundamental distinction between two types of data: Quantitative data is information about quantities, and therefore numbers, and qualitative data is descriptive, and regards phenomenon which can be observed but not measured, such as language.
Explanation:
apotemnophilia is a recessive disorder i believe
To make sure we don't get germs and get sick
