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What protects our Earth from harmful rays?
Science
What protects our Earth from harmful rays?
Oxygen layer
Ozone layer
Invis layer
Ocean layer
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How many years does it take for Mars to go around the Sun for a complete revolution in its orbit?
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What is a giant crack in a rock called?
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What are plants that live for three or more years?
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Which of these objects would be attracted to a magnet?
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Which of these is a famous astronomer for whom a comet was named?
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What does a conchologist collect?
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What is the speed of the solar system around the center of the galaxy?
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What is not an example of a cognitive distortion?
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