Similar to a refrigerator, an transfers thermal energy from inside a room to the outdoors
a. vacuum
b. air conditioner
c. dish washer
d. water heater

Refrigerators and air conditioners operate on the same principles,
and use largely the same inside guts.  The difference is that the
refrigerator takes heat away from the the stuff inside and dumps it
into the kitchen, whereas the air conditioner takes heat out of the
kitchen and dumps it outside the house.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.