When a person is frightened by a wild animal, what organ systems immediately become active?
A....
Biology, 22.05.2020 11:57 Jacobolobo7
When a person is frightened by a wild animal, what organ systems immediately become active?
A. endocrine and circulatory systems
B. Nervous and excretory systems
C. Digestive and circulatory systems
D. Respiratory and integumentary system‘s
Answers: 2
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