Sal has poor social skills, which are interfering with his ability to make friends at school. his therapist demonstrates correct and appropriate social skills for him and then encourages sal to mimic them. the learning of social skills eventually occurs and is all a result of sal watching his therapist and then practicing the new skills with him. this technique is referred to as

vertical merger is the term used for the joining of two or more firms involved in different stages of producing the same good or services.

explanation:

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.