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Which one of the following types of organism occupy more than one trophic level in a pond ecosystem? a)Fish b)Zooplankton c)Frog d)Phytoplankton e)Algae |
| Fishes occupy more than one trophic level because some feed only on phyto planktons, some feed on both. Fishes are seen swimming to al most all parts of the ecosystem in search of food. |
