In this task, you are given a paragraph, and your task is to construct a question from the given passage. Construct question in such a way that (i) it is well explained in the paragraph, (ii) the words may/may not be present in the paragraph, (iii) it should start with what/how/describe. Avoid creating a question that (i) is just relevant to one or two sentences, and (ii) not relevant to passage. 

Q: Fans blow air onto the evaporator's coils. The refrigerant within the coils absorbs the heat. The refrigerant changes from a liquid to a gas. The compressor compresses the gas, increasing the pressure. The hot, pressurized gas moves to the condenser. The gas condenses in the condenser and becomes a liquid again. Heat is radiated away from the condenser. The cooled liquid is returned to the evaporator. 

A: How does an air conditioner work?
****
Q: They take in fluids and liquids. They process the fluid. They take out the toxins. Produce urine. Urine is released. The nutrients are returned to the body. 

A: Describe what kidneys do
****
Q: A red giant burns mass. This mass creates high core temperatures. The mass decreases. The red giant can no longer fuse the carbon and oxygen in its center. The gravity of the star can no longer hold the outside layers. The layers break away. Only the inner core remains. This inner core is known as a white dwarf. 

A:
How is a white dwarf star formed?
****