question: Write a question you would see in a school textbook.
answer: What is the primary job of red blood cells?

question: Write a question you would see in a school textbook.
answer: The first step in the water cycle is evaporation. What gives water the energy to evaporate?

question: Write a question you would see in a school textbook.
answer:
A solar cell turns sunlight into another form of energy. A solar cell is most like what natural structure?