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.
If demand for a product changes a lot when its price changes a little, it's safe to say that consumers of that product are very price sensitive. This often is the case for products or services for which there are many alternatives or when the product is essentially a commodity, such as orange juice.