Which of the following is NOT a method of reducing HVAC usage? A Installing a programmable thermostat
B Applying window film to reduce solar heat gain
C Reducing use of outdoor air
D Improving a building's insulation

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

Why is it important that fibrin is insoluble in water?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?