Why do living things need water food and ability to get rid of waste

The living things require water, food, and the tendency to get rid of the waste in order to maintain homeostasis. Homeostasis refers to the tendency or the ability to sustain inner steadiness in an organism in order to compensate for the changes in the surroundings.  

The conditions in the body must be monitored spontaneously as the cells rely upon the body's surroundings to live and work. The human body maintaining a mean temperature of 98.6 degrees is an example of homeostasis.  

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explanation:

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,