Answer the following question: Answer the following question given this paragraph:   When fuel is burned, most of the energy is released as heat . Some of this heat can be used to do work. Heat cooks food or warms your house. Sometimes the heat is just waste heat. It still heats the environment, though.   Q: When fuel is burned most of the energy is released as what?   A:

Choices:
A). humidity
B). condensation
C). precipitation
D). heat
Answer:
D).