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What is responsible for the oxygen in Earth's atmosphere?
Converse
In logic, the converse of a statement is formed by swapping the hypothesis and conclusion of the original statement.
Proposition
A proclamation or assertion signaling an assessment or belief.
Obverse
The statement formed by negating both the subject and predicate of a given categorical proposition and changing the quality of the original proposition (from affirmative to negative or vice versa).
Proposition
A statement or assertion that expresses a judgment or opinion, which can be evaluated as true or false.
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