Which is an example of comparative advantage?

Which of the following activities would conserve the most energy? installing a dimmer switch on a light using a blender instead of a food processor hanging clothes to dry on a clothesline instead of ironing them opening a window instead of turning on the air conditioning setting your computer's screen saver to turn on after less time has elapsed

Two heads are better than one. two is company, three is a crowd. these two sentences similar in meaning opposite in meaning neither the same nor the opposite

Which of the following is a safe work practice to protect you from electrocution hazards? a. attach ungrounded, two-prong adapter plugs to three-prong cords and tools b. do not operate electrical equipment when working in wet conditions c. hold fingers on the switch while carrying a plugged-in tool d. use gfci only when using double insulated power tools