Which of the following statements is not true about the digestive system and its contribution to homeostasis? a. the digestive system to maintain the correct amounts of nutrients for the body tissues to do its job. b. the digestive system is responsible for monitoring the oxygen and carbon dioxide amounts in the blood and tissues. c. the digestive system breaks down food sources into the needed nutrients and deposits these nutrients into the blood for use by the cells. d. all of the above

Answer;

B. The digestive system is responsible for monitoring the oxygen and carbon dioxide amounts in the blood and tissues.

Explanations;

Homeostasis involves the maintenance of a constant body environment.

The digestive system is not responsible for monitoring the amounts of oxygen and carbon dioxide in the blood and tissues. (It is the function of the breathing system together with the circulatory system).

Digestive system instead helps maintain homeostasis in a number of ways, For instance;

-By changing the pH from the saliva for example, which makes the gastric environment acidic which helps the break down of food readily and fast and also protect the body from bacteria.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.