A species of fish living in a stream displays variation in body color. Fifty years ago, most of the fish were light colored but a few were dark colored. Over time, the clear water of the stream became cloudy and the population of dark-colored fish increased. Which statement explains why more dark colored fish were found after the water became cloudy

More dark colored fish survived long enough to reproduce

Explanation:

The rule of natural selection selection is that, survival is for the fittest.

For natural selection to occur, there must be a variation between the group of species and reproduction where the superior genes can be passed to the offsprings.

In this case, the variation was some fish were dark others were light colored.

When the water turned cloudy the dark colored fish were able to survive long enough to reproduce compared to the light colored fish.

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