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Which of the following physical features make it possible for amniotes to be completely terrestrial?
Natural Electrical Activity
The spontaneous electrical signals generated by neurons and other excitable cells as part of their normal physiological functions.
Epinephrine Norepinephrine
Two key neurotransmitters involved in the body's fight or flight response, regulating heart rate and blood pressure among other functions.
Adrenal Glands
Endocrine glands located above the kidneys that produce a variety of hormones, including adrenaline and cortisol, which regulate stress responses and other bodily functions.
Thyroid Gland
An endocrine gland in the neck that produces thyroid hormones, which regulate the body's metabolism, energy level, and overall growth and development.
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