Question

question 4 (1 point)
some antarctic fishes have adapted to the cold conditions __________.
○ by having a very short life span
○ by having a natural antifreeze protein in their blood.
○ by freezing over the winter and coming back to life in the spring.
○ swimming continuously and vigorously to keep up their body temperatures and prevent their blood from freezing.

Explanation:

Antarctic fishes face subzero water temperatures. A key adaptation is natural antifreeze proteins in their blood, which prevent ice crystal formation and blood freezing. Short lifespans, freezing/thawing, or continuous swimming are not primary adaptations for these conditions.

Answer:

B. by having a natural antifreeze protein in their blood.