question: Write a question you would see in a school textbook.
answer: A student uses clay to build models of an ocean plate and a continental plate. What characteristic cannot be accurately represented by the models?

question: Write a question you would see in a school textbook.
answer: How are green plants an important part of the carbon dioxide-oxygen cycle?

question: Write a question you would see in a school textbook.
answer:
Which of these processes can cause layers of rock to be arranged so that the youngest layers are found below older layers?