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.
The classic microeconomics supply and demand model shows price on the vertical axis and demand on the horizontal axis. In between them is a downward-slowing demand curve where price and quantity demanded have an inverse relationship. The general concept is intuitive: as goods become more expensive, people tend to demand less of them. For many simple markets, this inverse relationship holds true. If the cost of a shirt doubles, consumers buy fewer shirts, all else being equal. If the shirts go on sale, consumers tend to buy more. There are several problems with the simple supply and demand model, however.