Given a scientific passage and an answer, generate a question for the given answer.
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Question: Passage: From a human point of view, natural resources can be classified as either renewable or nonrenewable. Answer: renewable or nonrenewable

Answer: How can natural resources be classified from a human point of view?

Question: Passage: The pulmonary circulation carries blood between the heart and lungs. The systemic circulation carries blood between the heart and body. Answer: heart and lungs

Answer: The pulmonary circulation carries blood between what two organs?

Question: Passage: Earth itself acts like a gigantic gyroscope. Its angular momentum is along its axis and points at Polaris, the North Star. But Earth is slowly precessing (once in about 26,000 years) due to the torque of the Sun and the Moon on its nonspherical shape. Answer: gyroscope

Answer:
Earth acts like a giant version of what device, with angular momentum along its axis and pointing at polaris, the north star?