An increase in the number of businesses in the industry would be represented by a movement from demand curve.
The amount required as well as the price shift from one point to the next as the demand curve moves along. Other factors stay the same when there is a change in the quantity demanded as a result of a change in the price of the good or service, which causes the demand curve to move.
A movement along the supply curve is when there is a change in the quantity supplied by businesses as a result of a price adjustment. The supply curve shifts when a change in the quantity supplied at the old price is caused by a factor other than price.
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