(a)Distinguish between a change in Quantity Demanded and a change in Demand.Please include a written answer and diagrams

(b) For each of the following, explain whether there's a change in quantity demanded or a change in demand in the market for blueberries. Please explain your answer in each case...

(i) Tastes and preferences for blueberries increase, so consumers buy more blueberries (all else equal)

(ii) There's an increase in the price of strawberries, so consumers buy more blueberries(all else equal)

(iii) There's an increase in the price of blueberries, so consumers buy fewer blueberries(all else equal)

Could you please help me?