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Protect River Dolphins And Their River Habitat In Their Range Fondation Segre  Amazon River Dolphin Food Chain In summary, a food chain shows a linear transfer of energy from one species to the next, while aBiotic Factors In the Amazon River, there are many living things (Biotic Factors) that contribute to the ecosystem A few examples are the following The Mata Mata Turtle The Amazon River Dolphin The Victoria Water Lillie The Mata Mata Turtle contributes to the environment by being a predator and controlling the population of small fish Amazon river dolphin food chain