question: Write a question you would see in a school textbook.
answer: A recent study concluded that about 90% of all large predatory fish such as tuna have disappeared from the world's oceans in the past 50 years. Which of these is most likely the direct cause of this loss?

question: Write a question you would see in a school textbook.
answer: How is the structure of an atom best described?

question: Write a question you would see in a school textbook.
answer:
Which is an example of a chemical reaction?