What is the liquid that evaporates inside the refrigerator to "create" the cold temperature?

What is the liquid that evaporates inside the refrigerator to "create" the cold temperature?

Answer: refrigerant

Where do you think would the heating degree days would be the highest?

Where do you think would the heating degree days would be the highest?

Answer: north pole

Which of the following is an indicator of heating requirements?

Which of the following is an indicator of heating requirements?

Answer: HDD

How can energy usage due to water heating be minimized?

How can energy usage due to water heating be minimized?

A) By turning the water heater thermostat temperature down
B) By taking a shower instead of a dip in bath tub
C) By not using running water while brushing your teeth