Which behavior is a response to an external stimulus? A. A child gets a fever to fight off the flu.

B. An elephant drinks water to quench its thirst.

C. A dog vomits during an illness to rid itself of pathogens

D. A turtle suns itself on a rock during a cool day​

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ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called