Topic: Is the rise in Childhood Obesity a result of a sedentary lifestyle or due to pre-disposing factors? Research shows that rising number of obese children cannot be attributed solely to sedentary lifestyle or to predisposing factors. The research sites a number of factors that attribute to the childhood obesity epidemic.
Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula Cu Al 6 (PO 4) 4 (OH) 8 Â·4 H 2O.t is rare and valuable in finer grades and has been prized as a gem and ornamental stone for thousands of years owing to its unique hue. In recent times, turquoise, like most other opaque gems, has been devalued by the introduction of treatments, imitations, and synthetics onto the market.
The substance has been known by many names, but the word turquoise dates to the 17th century and is derived from the French turquois for Turkish because the mineral was first brought to Europe from Turkey, from mines in the historical Khorasan Province of Persia.