I just took a test in school today. What question was I asked?

Question I was asked: Earthworms live underground in the soil. As they move through the soil, they create tunnels. The tunnels help improve the soil. Plants grow better in soil that has earthworms. Which statement explains how earthworm tunnels help plants?

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What is the smallest particle of the element gold (Au) that can still be classified as gold?

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Question generated: In the human body the digestion of proteins takes place primarily in which two organs?

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

Answer: A scientist wanting to document a change in a river's flow pattern should observe a river over a period of

question: Write a question you would see in a school textbook. OPTIONS:
- a pit where granite is ground up into gravel
- a neighborhood where lawn chemicals are used
- a junkyard where old cars are salvaged for parts
- a grain elevator where corn and soybeans are stored
answer: A drinking water reservoir for a small town develops a blue-green algae bloom. The town hires a company to eliminate the problem. Which of the following should the company investigate first as a likely source of the problem?

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Question generated:
A student conducts an investigation. In order to make a valid conclusion, she must