B. Niche—the ecological niche involves both the place where an organism lives and the roles that an organism has in its habitat. Example: The ecological niche of a . sunflower. growing in the backyard includes absorbing light, water and nutrients (for photosynthesis), providing shelter and food for other organisms (e.g. bees, ants, etc.), and giving off oxygen into the atmosphere.
1 Microbiology and ecology of wastewater treatment 1 1.1 Introduction 1 1.2 Microorganisms present in water and wastewater 2 1.3 Biological cells 3 1.4 Energy and carbon sources for microbial cells 4 1.5 Metabolism of microorganisms 5 1.6 Energy generation in microbial cells 6 1.7 Ecology of biological wastewater treatment 10