An unlearned behavior directly linked to a stimulus that is carried to completion once initiated and is essentially unchangeable is see concept 51.1 (page 1138)

What did hunter gathers do to alter the environment?

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above