All individuals of one species living in an area is called?

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

Someone me with this: a mineral' is determined by its actomic structure.

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