Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: They will all blend together. The dyes will move through the water until an even distribution is achieved. The process of moving from areas of high amounts to areas of low amounts is called diffusion. Answer: diffusion
[EX A]: The process of moving from areas of high amounts to areas of low amounts is called what?

[EX Q]: Passage: The bodies of organisms can make a sedimentary rock. Plant bodies are lithified to become coal. When shells are cemented together they make a type of limestone. So limestone can be considered chemical or organic. Answer: coal
[EX A]: What is formed when plant bodies are lithified?

[EX Q]: Passage: Plants also detect and respond to the daily cycle of light and darkness. For example, some plants open their leaves during the day to collect sunlight and then close their leaves at night to prevent water loss. Environmental stimuli that indicate changing seasons trigger other responses. Many plants respond to the days growing shorter in the fall by going dormant . They suspend growth and development in order to survive the extreme cold and dryness of winter. Dormancy ensures that seeds will germinate and plants will grow only when conditions are favorable. Answer: close their leaves
[EX A]:
What do plants do to prevent water loss at night?