Report Abuse It is, in general, the hottest month of the year. Report Abuse September and October are the best months weather-wise for SF. The fog stays off shore and the sun shines ... You should have pants and a sweater or jacket along, but it rarely rains.
Bone density (or bone mineral density) is a medical term normally referring to the amount of mineral matter per square centimeter of bones. Bone density (or BMD) is used in clinical medicine as an indirect indicator of osteoporosis and fracture risk.
Density is a physical property that describes the relationship between mass and volume. Density is the amount of matter in a given space, or volume. A golf ball and a table-tennis ball have similar volumes. But a golf ball has more mass than a table-tennis ball does.