Earth

What is the top layer of the soil called?

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Which word means to "filter down through the soil horizons"?
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In Wyndham, Australia, it was 90 degrees for how long?
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What product of burning fossil fuels can cause death by preventing oxygen from getting to cells?
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Which of these types of energy is cleanest and causes the least pollution?
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Which of these is the Greek name for the east wind?
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What does a pluviometer measure?
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What molecules in fossil fuels are made from carbon and hydrogen?
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What is amber?
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