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

Question I was asked: When oxygen combines with hydrogen, which substance is formed?

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All of the processes listed below cause changes in Earth's surface. Which of the following is the slowest to change Earth's surface?

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Question generated: Some localized layers of rock contain the element iridium. Iridium is most often found in space objects such as meteoroids and asteroids. The discovery of these iridium-containing layers has been matched to which phenomena in Earth's history?

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

Answer: During photosynthesis, plants absorb light energy from the Sun and convert it into chemical energy in the form of glucose. Which compounds combine in the presence of sunlight to form glucose?

question: Write a question you would see in a school textbook. OPTIONS:
- blood circulation.
- temperature.
- respiration.
- heart rate.
answer: The production of sweat is typically a response to an increase in the body's

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Question generated:
A student drops a ball. Which force causes the ball to fall to the ground?