A heat pump? it might be furnace but i think its heat pump
Answer:
An elliptical orbit is the revolving of one object around another in an oval-shaped path called an ellipse. The planets in the solar system orbit the sun in elliptical orbits. Many satellites orbit the Earth in elliptical orbits as does the moon.
It is A. a refrigerator cause a alternating current is current that doesn't stop and the refrigerator is plug into the wall.
