Peptic ulcers are sores in the lining of the stomach that are caused by a bacterial infection. these bacteria increase the acid in the stomach and eat away at the stomach lining, which causes sores. when this occurs, which type of tissue does the acid remove?

a. connective

b. epithelial

c. muscle

d. nervous

Ans. Option b). epithelial.

The lining of gastrointestinal tract, including stomach is made up of epithelial tissues. The tissue are composed of mucous columnar cells that produce mucus to protect stomach from enzymes and acids.

When acidity of stomach is increased due to bacterial infection, the acid present in gastric juice causes damage to the outer covering or epithelial layer of stomach.

Thus, the correct answer is option b). 'epithelial.'

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

the correct answer is:

a population changes in response to a change in the environment.