How will the following changes affect the market price of wheat flour (assuming that the market is initially in equilibrium)? In each case, illustrate with a diagram what happens to the demand and/or supply curves and, as result, what happens to the equilibrium price and equilibrium quantity.

(a) People consume more bread;

(b) The discovery of a new cheaper way of milling flour;

(c) The prices of other grains rise;

(d) Rice and potatoes fall in price