This document discusses habitat and niche. It defines habitat as the natural environment where an organism lives, including physical factors like temperature and moisture as well as biotic factors like availability of food and predators. A microhabitat refers to small-scale habitat requirements. Examples of animal and plant habitats are provided for different regions. Niche is defined as an organism's role in an ecosystem, including what it eats, where it lives, and what it does. The fundamental niche is the full range of conditions an organism can survive in, while the realized niche is the actual conditions it is found in due to interactions. Examples of beaver, raccoon, and red-tailed hawk/barred owl niches are described to illustrate these concepts