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.
Products and services that complement what you offer the market can affect the demand curve. For example, you may sell hot dogs, while a complementary business offers hot dog rolls. If the price of the hot dog rolls increases, it can cause the demand for hot dogs to decrease.