Explain the difference between a movement along a demand curve predicted by the Law of Demand and a shift of the whole demand curve or short termed as a shift or change of demand. List at least two factors that would change the demand and explain whether it will increase or decrease the demand. OR Explain the difference between a movement along a supply curve predicted by the Law of Supply and a shift of the whole supply curve or short termed as a shift or change of supply. List at least two factors that would change the supply and explain whether it will increase or decrease the supply.