D) Territory
For example Puerto Rico is its own country but is territory of the United States.
Answer:
Maintain the heating system. Have your furnace inspected regularly by a qualified professional and change filters once per month.
Install a programmable thermostat.
Turn down the water heater.
Conserve hot water.
Cook up energy savings.
Explanation:
a) pillow lava
Pillow lava only forms underwater, and occurs when lava is squeezed out of a crevice and solidifies incredibly quickly.
The answer is b constant and unique
