Basic General Knowledge
The exhaled air contains

a mixture which has more carbon dioxide than oxygen
a mixture of carbon dioxide, nitrogen and oxygen in which nitrogen has the highest percentage
a mixture of carbon dioxide and nitrogen
carbon dioxide only

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Basic General Knowledge
Walt Disney was

the President of America during World War I
the greater of cartoon films starring popular cartoon characters Mickey Mouse and Donald Duck
None of these
the British physician known for his discovery of Addison's disease

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