Antibiotic associated pseudomembranous colitis is caused by

Caused by the growth of Clostridium difficile bacteria.

Explanation:

Pseudomembranous colitis is an inflammation of the intestines that usually appears in people who are being treated with some types of antibiotics, such as Amoxicillin or Azithromycin, due to the overgrowth of Clostridium difficile bacteria in the last portion of the intestine, the colon. Bacteria cause damage to the large intestine through the bacterial toxin, leading to diarrhea and the appearance of whitish plaques inside the colon.

the missing space is phylum

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .