Macroevolution is the term that describes development of new species and mass extinction. It denotes <span>large-scale evolution that occurs at the level of species and above.</span>
Microevolution on the other hand denotes the smaller evolutionary changes of allele frequencies within a species or population.
Answer:
Social psychology, according to Ellwood, is “the study of the [individual psychological] origins involved in the development, structure, and functioning of social groups.”