Answer:
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Explanation:
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D.) a unicellular organism that has a simple structure and is commonly found in human intestines.
Answer:
<h2>On average, only about 10% of the energy stored as biomass in one trophic level—e.g., primary producers—gets stored as biomass in the next trophic level—e.g., primary consumers. Put another way, net productivity usually drops by a factor of ten from one trophic level to the next.</h2>
