PLS HELP Due in 20 minutes

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Which direction does the energy flow in this energy pyramid ?

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.