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How did Wegener work out what Pangea looked like?
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How much energy moves onto the next level, in an energy pyramid
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Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?
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Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol
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Use examples from the article to explain one positive and one negative effect that chemistry has had on society.
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How did Wegener work out what Pangea looked like?...
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