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Unlike freshwater fish, saltwater fish
A. often contain a lower concentration of salt than the water they live in.
B. tend to gain water from their surroundings.
C. would swell if they didn't conserve water.
D. would swell if they didn't eliminate salt.

Respuesta :

rube
Unlike freshwater fish, saltwater fish often contain a lower concentration of salt than the water they live in.

so your answer is A. often contain a lower concentration of salt than the water they live in.
hope that helps!!!!!

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