Which term refers to the adjustment of a schema by adding information similar to what is already known?

 The correct answer here would be assimilation. assimilation is the process in which a minority group or culture comes to resemble those of a dominant group. This is a process or another part of adaptation involves changing or altering our existing schemas in light of new information. 

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it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.