Homeostasis is the ability of an organism to maintain a stable condition within its body. This stable infernal environment is regulated by such body processes as respiration, circulation, and balance of body fluids. The nervous system and the hor¬mones (chemicals) of the endocrine system (gland system) greatly influence homeostasis. All living things main¬tain some balance of internal conditions.
Scientists believe that homeostasis indicates the degree of evolution (gradual development) of a species.
The steadier an organism's internal systems, the more independent it is of the external environment. In turn, the more independent it is of its external environment, the more highly developed it is.
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