Which of the following separates the stomach from the duodenum?
(a) pyloric sphincter
(b) esophageal sphincter
(c) ileocecal sphincter
(d) hepatopancreatic sphincter

a) Pyloric sphincter.

Explanation:

The function of Pyloric sphincter is defined as a band of smooth muscle that plays an important function in moving the contents of your stomach  in t the small intestine. In other words this muscle is at the junction between the   pylorus of the stomach and the duodenum of the small intestine.  

I think its air pollution and Global warming

Explanation: