Problem: Write a question you would see in a school textbook.

Answer: Of the examples listed, which event is thought by scientists to have led to the greatest extinction?

Problem: Write a question you would see in a school textbook.

Answer: Which property of an object can be described as smooth?

Problem: Write a question you would see in a school textbook.

Answer:
Which physical property is important to have in a material used in cookware?