contestada

A. The fish population contains individuals with effective predation evasive traits and eventual changes to the dam prevent fish from moving downstream.

B. The fish completely lack any effective predation evasive traits across the entire population, move infrequently from upstream to downstream locations, and reproduce with low frequency.

C. The fish reproduce with high frequency, move with high frequency from upstream to downstream locations, and have a robust set of predation evasive traits across the entire population.

D. The rate of upstream fish entering the downstream section decreases over time without being completely shut off, and many of these fish carry predation evasive traits.

Respuesta :

The fish completely lack any effective predation evasive traits across the entire population, move infrequently from upstream to downstream locations, and reproduce with low frequency, because the fish in this situation would become extinct even though they live in predation-prone waters and do not migrate, and they do not reproduce quickly enough to substitute the population lost to predators.

When prey was set to release from predation pressure, their growth increased, a process that had not previously been studied in reef-fish growth studies. The suppression of development in response to predation pressure suggests that predators may have a broader impact on reef-fish evolution than previously thought.

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