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

Question I was asked: Which of these provides most of the oxygen in Earth's atmosphere?

Random question?

Phyllis investigated what happened when she added some different substances to water. Which substance can combine with water to form a solution?

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Question generated: Some plant cells are coated in a waxy layer that prevents water loss. This specialization is found in which plant cells?

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

Answer: What part of the scientific method involves measuring the growth of a plant over a one-month period?

question: Write a question you would see in a school textbook. OPTIONS:
- lever
- pulley
- inclined plane
- wheel and axle
answer: Scientists wonder how the Egyptian pyramids were built. They think that the huge blocks of stone may have been put into place by pushing them up a sloping pathway. The pathway is which type of simple machine?

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Question generated:
Variation in which property between water at different temperatures contributes most to the formation of horizontal ocean layers having distinct temperatures?