Why does geographic isolation cause speciation? a. it causes adaptive radiation between two populations. b. it increases gene flow between two populations. c. it decreases divergence between two populations. d. it prevents the two populations from interbreeding?

Is there any solid scientific evidence that humans have been cloned?

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

Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive