What is the difference between microevolution and macroevolution? A$.$ microevolution is small changes within a species, macroevolution is the formation of new species B$.$ microevolution is small changes within a species, macroevolution is large changes within a species C$.$ microevolution is slight changes that make a new species, macroevolution is large changes that make a new species$=$ If an environment changes rapidly, organisms with $\_$ will be more likely to survive and reproduce. A$.$ the correct allele frequency B$.$ existing neutral mutations C$.$ existing beneficial mutations$=$ What is imprinting? Give an example. A$.$ fixed assocation, such as hatching ducks recognizing the first animal they see as their mother B$.$ a learned behavior, such as a wasp circling during a search for food, so that it can return to its nest C$.$ alteration of instinct, such as a spider changing the type of web it weaves depending upon the environment