Earth

What is it called when a plant produces two kinds of sex cells?

More Questions from Earth
What percentage of rock-forming minerals are silicates?
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What is the natural process by which rocks break down into smaller chunks?
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Who published the book "The Theory of the Earth" in 1795?
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Ruby and sapphire are gem forms of which mineral?
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What type of topography describes caves, caverns, and sinkholes?
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In what month does the vernal equinox take place in the northern hemisphere?
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What kind of waves does an earthquake produce?
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What produces more energy than all the world's nuclear weapons combined?
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