question: Write a question you would see in a school textbook.
answer: Generally, the deeper rock layers of Earth are older than shallower rock layers. How can the collision of two tectonic plates change the order of the rock layers?

question: Write a question you would see in a school textbook.
answer: Which of the following best describes a role of mushrooms in ecosystems?

question: Write a question you would see in a school textbook.
answer:
Most birds sit on their eggs until they hatch. Which of these is the most important reason why birds sit on their eggs?