How many hand we have actually?

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

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Along what geographical feature are most of the oil producing regions located