Earth

What theory proposes that Earth's landmasses were once connected and drifted apart?

More Questions from Earth
A weather proverb says: "Clear moon," followed by what?
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What is a reason for the Earth's seasons?
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Lightning struck what eight times in 24 minutes?
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Which of these is a warm spell of weather when ice and snow melt?
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Where does most evaporation of water occur?
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A line of equal or constant air temperature is what?
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In weather terms, what does the Fujita scale classify?
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What is the main cause of caves?
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