Answer:
The algae can release harmful chemicals known as "bio-toxins" that can contaminate the water and kill the organisms living in the ecosystem
Explanation:
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Separate the soil from clay, sand, and silt. Then test each soil to find which is stronger or weak when it’s wet or dry.
The correct answer is the last one: Decreased variation in tail feather color because the only reason for variation was selection pressure.
If the female peacock were to base her selection criteria on something other than the colors of the male's tail feathers, the latter would not play such an important role anymore and therefore there would no longer be the pressure of needing to have the brightest, most variant and vibrant colors.
