Problem: What famous John Steinbeck novel featured the travels of Tom Joad?
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A: grapes of wrath

Problem: A longtime resident of Jellystone National Park, what is the name of Yogi Bears long suffering girlfriend?
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A: cindy

Problem: A 'Scouser' is a native of which English city?
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A: liverpool

Problem: What colourless/colorless, odourless/odorless, poisonous polluting gas is chiefly emitted by small engines typically used in lawn-mowers and chainsaws, etc?
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A:
carbon monoxide