Choose all the answers that apply. homeostasis is a required characteristic for living organisms is controlled by the hypothalamus in animals only occurs at the organism level requires the ability to sense changes in the external environment is maintained in a cell by the cell membrane

is a required characteristic for living organisms

is controlled by the hypothalamus in animals

only occurs at the organism level

Explanation:

Homeostasis refers to the control of the body's internal environment. It is the ability of the body to regulate imbalances especially endocrine imbalances. It is controlled by the hypothalamus in the brain of animals. Homeostasis involves complex cooperation of the endocrine system in the body

i believe the answer is a.