Which of the following animals is the most complex? base your decision on body plan, structures used to carry out various functions, and structures used to respond to the environment. flatworms sponges hydras sea urchins

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.