The observation that freshwater habitats account for only 1% of the Earth's water,and they are home to 36% of the known species of fish is due to ____ speciation.

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This observation is attributed to sympatric speciation, where new species evolve from a single ancestral species while inhabiting the same geographic region. Freshwater habitats, despite their limited area, can have diverse environmental conditions and resources that promote such speciation without the physical separation required in allopatric or parapatric speciation.

The Observation That Freshwater Habitats Account for Only 1% of the Earth's