A Fish Swimming into an Estuary from a River Would

question 12

Multiple Choice

A fish swimming into an estuary from a river would have which of the following as its greatest physiological challenge?

• A) The high water flow would make the fish expend more energy.
• B) The low oxygen content would give the fish difficulty in swimming aerobically.
• C) The temperature change would stress the fish by denaturing its proteins.
• D) The change in water solute content would challenge the osmotic balance of the fish.

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Definitions:

Species Concepts

The various criteria used by biologists to define and identify species, including morphological, biological, ecological, and phylogenetic distinctions.

Defining Bacteria

The process or criteria used to identify and categorize bacteria based on characteristics such as shape, gram stain, and genetic composition.

Ecological Speciation

The process through which new species arise due to ecological interactions and adaptations to different environmental niches.

Three-Spined Stickleback

A small fish species used extensively in evolutionary biology to study adaptation and speciation.