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A lot of things have acid in them. There are man made ones such as sulphuric acid and natural ones.

Natural acids or organic acids such as: tannic acid in tea

malic acid in green apples

tartaric in grapes/tamarind

citric acid in lemons/Oranges/limes

lactic acid in milk

acetic acid in vinegar

formic acid in the sting of bees and ants

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12y ago

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