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What is made up of usable amounts of metallic elements? carbonate oresilicate a mineral
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Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?
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The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?
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How does a catalyst influence a chemical reaction?
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What is made up of usable amounts of metallic elements? carbonate oresilicate a mineral...
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