Earthworms are best described as saprotrophic organisms as they obtain energy by feeding on decaying organic matter in the soil. This feeding method allows them to recycle nutrients, which is critical for soil health. By breaking down dead material, earthworms contribute significantly to the ecosystem. ;
Earthworms are best described as saprotrophic organisms because they obtain energy by feeding on decaying organic matter in the soil. This process is essential for nutrient cycling and maintaining soil health. Therefore, the correct answer is C.
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