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

Answer: A student leaves a rock in the Sun on a bright afternoon. An hour after sunset, the weather is cool, but the rock still feels warm. The student has demonstrated a property of the rock resulting directly from which of the rock's other properties?

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

Answer: Over a long period of time, a rocky volcanic island that previously did not support any form of life got transformed into a dense forested region. Which of these species is most likely to have been the pioneer species that initiated this transformation?

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

Answer:
What structure surrounds the cell and regulates materials that enter and leave the cell?