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Answer: An organism is a living thing that can preform all the life functions.
Answer:
the esophageal sphincter
Explanation:
This muscle opens and lets food and liquid enter the stomach and closes to prevent the food and liquid from leaking back into the esophagus, however if it is not working properly it could open and close at the wrong times
Answer:
In Pavlov's experiment, the food was the unconditioned stimulus. An unconditioned response is an automatic response to a stimulus.
Explanation:
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