The tendency of a cell or an organism to maintain a stable internal environment is known as a. homeostasis b. homogeneous c. homology d. homeopathy

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Me d: which system contains the heart, blood, and blood vessels? a. muscular b. circulatory c. respiratory d. digestive which system contains the pituitary, adrenal, and thyroid glands? a. respiratory b. circulatory c. endocrine d. reproductive