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Benthic organisms are affected most by

1. Water-holding capacity of soil
2. Light reaching the forest floor
3. Surface turbulence of water
4. Sediment characteristics of aquatic ecosystems

Correct answer: Sediment characteristics of aquatic ecosystems

Solution

Benthic organisms inhabit the bottom of aquatic systems, where they live on, in, or near sediments. Therefore, the physical and chemical properties of those sediments most strongly influence them.

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