The opposite can be true; i.e., people with large muscle mass sometimes have elevated CK levels in the absence of any pathology. This particular enzyme falls into a category where an individual's own normal is more relevant than the normal range given for a population.
1 If the demand increases, and the supply remains the same, there will be a shortage. 2  This will mean the price will increase. 3  If the demand decreases, and the supply remains the same, there will be a surplus. 4  This will mean the price will go down.
Milk--a little unsure, there are no substitutes for milk, mayble inelastic. Gas--i would say inelastic because the demand for gas is high. prices are rising but people are still buying gas. pop-- definitely elastic because there are other alternatives; for example, you can drink water, sprite, gatorade. So, if prices rises the demand for pop will decrease.