7. In a desert such as this, what is the limiting
factor on plant populations? What would make
the population increase? What would make the
population decrease?

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.