Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: If heated water is released into a body of water, it may cause thermal pollution. Thermal pollution is a reduction in the quality of water because of an increase in water temperature. A common cause of thermal pollution is the use of water as a coolant by power plants and factories. This water is heated and then returned to the natural environment at a higher temperature. Answer: thermal pollution
Solution:
What happens when heated water is released into a body of water?