Earth

What is the top layer of the soil called?

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Where are tropical zones located on the Earth?
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What weather-related season is between June 1 and November 30 in North America?
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Which is not a source of aluminum ore?
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What is the most-spoken language in the world?
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Where in Arizona is the sun blocked 10% of the time?
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How many continents does Earth have?
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In what direction does the sun set for people on Earth?
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What instrument indicates wind direction?
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