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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.
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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

User THE AMAZING
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Answer:

C.

Step-by-step explanation:

User Dan Wich
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