Which of the following adaptations increase(s) the amount of oxygen that a fish can extract from the surrounding seawater?

A. All of the answer options are correct.
B. gills with a large surface area
C. very thin lamellae
D. countercurrent exchange
E. ventilation of the gills with the aid of an
operculum


A

Biology & Microbiology

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Topic 2.5 - Chemotrophy

What will be an ideal response?

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Dragonflies that ranged in size from those smaller than today's dragonflies to some with wingspans of

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