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punctuation mark at the end of a sentence (e.g. The sky is blue.) or at the end of an...

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a method of calculating all the possible outcomes of more than one event.

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the notation (standardised set of rules and symbols) that allows us to describe functions.

an atom or group of atoms that replaces a hydrogen atom in an organic compound.

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pollutants that can be absorbed by the environment and cause no damage at low levels.

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