A salmon migrates from the ocean to freshwater rivers to spawn. What is the freshwater environment

like for the salmon?
a. Hypertonic
b. Hypotonic
c. Isotonic
d. Equitonic


ANS: A
The freshwater environment is hypertonic to the salmon. The water would be moving into the fish
through its cell membranes. Information can be found in the section Environmental Factors Influence
the Success of Marine Life.

Environmental & Atmospheric Sciences

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