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.
People also are able to buy more at a lower price because of the income effect-their real incomes have increased. A change in quantity demanded occurs when there is a change in the price of the good. A change in demand occurs when there is a change in any factor that affects demand other than price.