Consider the world supply of cocoa beans, the main input in the production of chocolate. For each of the events listed below, state and explain the likely effect on the supply of cocoa beans. How would each event be illustrated in a diagram?

a. Ideal growing conditions lead to a bumper crop of cocoa beans in Ivory Coast, the largest supplier of cocoa beans.

b. A dramatic rise in the world price of coffee beans. Assume that farmers growing cocoa beans can easily grow coffee beans instead.

c. Wages for farm labour in cocoa-growing regions rises.

d. Farmers in various parts of the world see profits being earned by cocoa farmers and choose to enter this industry.