P. R. Yadav
Published: 2004
Total Pages: 374
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Contents: Symbiotic Relationships, Ecological Factors, Aquatic Ecosystems, Terrestrial Ecosystems, Ecological Niches, Population Ecology, Nutrient Cycles of an Ecosystem, Oxygen Cycle, Mineral Cycles, Water Cycle, Nitrogen Cycle, Carbon Cycle, Energy Cycle, Energy Cycle in Ecosystems.