What problems did the ancient Greeks run into because of geography?

The graph below shows how the price of wheat varies with the demand quantity. suppose that lower production costs increases the supply of wheat, such that more wheat is supplied at each price level. the new equilibrium price (after the increase in supply) is

Like many cities in the south, atlanta was poorly prepared to meet the emergency of the great depression.  which statement  bestdescribes how atlanta was poorly prepared?

What greek scientist created a screw to move water for irrigation?