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Which of these is an element water oxygen sodium chloride or air

Which of these is an element water oxygen sodium chloride or air-example-1

2 Answers

3 votes
Heh, air is an element I believe. (The Last Airbender got me like...)
User Jkff
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5 votes
oxygen because it is one the table of elements and none of the others are.
User Adimoh
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