question: Write a question you would see in a school textbook.
answer: Which substance is usually found in nature as a liquid, solid, and gas?

question: Write a question you would see in a school textbook.
answer: Environmental organizations have asked businesses to take action to reduce waste. Which of the following changes could a business make in order to become more "environmentally friendly"?

question: Write a question you would see in a school textbook.
answer:
A teacher is performing a demonstration about static electricity for his class by rubbing a balloon against a wool sweater. The balloon sticks to the wool sweater. Which particles are exchanged during the demonstration?