In Pavlov's classic experiments, the repeated presentations of the metronome along with the food was called the step of the classical conditioning process.

acquisition                                                        

Explanation:

Acquisition: In psychology, the term "acquisition" was explained by a psychologist named Ivan Pavlov and is defined as the very first stage related to learning in the classical conditioning process through which a specific response is being established.

In other words, the acquisition is described as a period whereby a particular stimulus tends to trigger a specific conditioned response.

Example: In classical conditioning, when a dog begins to salivate after getting associated with the sound of a bell.

In the question above, the given statement signifies the "acquisition" period.

according to hess's theory, when the magma cooled, it would expand and push the tectonic plates apart. it would push the north and south america plates to the west and eurasia and africa ones to the east. the atlantic ocean would get wider but the coastlines of the masses would stay the same.

harry hammond hess was a geologist and a united states navy officer in the second world war. he is considered to be one of the founding fathers of the theory of plate tectonics. he is known for his theories on sea floor spreading, stating that the movement of the continents was the result of see floor spreading. the continents are attached to the plates and do not move separately. the plates themselves shift and change shape, carrying the continents along.

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