The enteroendocrine cells of the intestinal glands are responsible for producing which intestinal hormones a. biliverdin and bilirubin b. cholecystokinin and secretion c. gastrin and pepsinogen d. enterokinase and aminopeptidase

b. Cholecystokenin and secretion

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.