why do the ulcer causing bacteria can survive in ur stomach but not the other type of bacterias ? what condition exist in the stomach that the ulcer-causing bacteria would have to withstand?

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Solution

Stomach ulcers are caused mainly by bacteria known as Helicobacter. This bacteria is thought to hide in the mucus layer of stomach where pH is basic. Thus, prevents itself from the acidic medium of stomach.

The stomach possesses acidic condition that ulcer-causing bacteria have to withstand to survive in the stomach.

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