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

Question I was asked: The magnitude of the gravitational force between two planets depends on the

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A scientist needs to take a picture of the well-ordered arrangements of the atoms and molecules within a substance. Which of the following instruments would be best for the scientist to use?

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Question generated: Which organ is part of the respiratory system?

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

Answer: A water company uses lab tests on the water supply before sending the water through pipes to people's homes. How do these lab tests help people?

question: Write a question you would see in a school textbook. OPTIONS:
- Nothing will remain in the container.
- Only salt will remain in the container.
- Only sand will remain in the container.
- Salt and sand will both remain in the container.
answer: In a container, a mixture of water and salt is stirred so that the salt dissolves completely. Sand is added to this solution and allowed to settle to the bottom of the container. If the container is placed on a heat source and the liquid evaporates completely, what will be left in the container?

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Question generated:
Soil erosion can be best prevented by