William gaskin is scheduled for a procedure tomorrow at the diagnostic center. he will receive an infusion of a radiopaque contrast medium, barium sulfate, into the rectum. the contrast medium will remain in the lower intestinal tract while x-ray films are obtained of the lower gi tract. this procedure is called .

The correct answer is: barium enema.

Barium enema is technique used for detection of  changes or abnormalities in the large intestine-colon via X-rays so it is often called  colon X-ray. Barium envelops the lining of the colon so it is clear to see silhouette of the colon. This type of diagnosis is used in the case of abdominal pain, rectal bleeding, chronic diarrhea..

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.