Convection, conduction, and radiation.
Answer:
D
Explanation:
Because I just had that answer
Answer:
A heat engine is a device that converts internal energy into work. Internal energy is increased by the addition of heat. The efficiency of a heat engine is a measurement of how efficiently it works. Efficiency compares the amount of useful energy extracted from a process to the total energy input. The heat engine will be more efficient if the percentage is higher.
Explanation:
research the different time zone around the world, and characteristics of each
