Pavlov's dog stopped salivating to the tone when the food was no longer paired with the tone. this is an example of

The given situation is an example of extinction in classical conditioning.

Explanation:

Classical conditioning is a learning process in which an unlearned reflex response, called the conditioned response, is induced by pairing a biologically potent stimulus, called unconditioned stimulus, with a originally neutral stimulus, called conditioned stimulus.

If the said conditioned stimulus is repeatedly introduced in the absence of the unconditioned stimulus, then it will not induce the conditioned response. This is known as the extinction of the conditioned response.

In the given example, tone is the conditioned stimulus, food is the unconditioned stimulus and the dog salivating is the conditioned response.

Therefore, the given situation is an example of extinction in classical conditioning.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.