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![What is an Ecosystem? Biotic Factors, Abiotic Factors, Habitats and Niches Explained Grade 6-8 Life Science [Hardcover]](/itemImage/2/7/9/8/2_7203399.jpg "What is an Ecosystem? Biotic Factors, Abiotic Factors, Habitats and Niches Explained Grade 6-8 Life Science [Hardcover]")