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sorry I don't understand your question
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In Pavlov's original studies on classical conditioning, he used dogs as the subject of his experiment. The unconditioned stimulus was the <u>bowl of food</u> that he presented to the dog while the unconditioned response was the dog salivated in its excitement to see the food.
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realmente no se pero seguro lo buscas en gogle y sale perdon
Oxygen has no smell while ozone has a strong pungent odor. hope this help have a good day