The document defines key terms related to ecology including habitat, population, community, ecosystem, biosphere, ecological niche, succession, pioneer species, climax community, primary succession, secondary succession, and biome. It then provides examples of different biomes including tundra, taiga, temperate deciduous forest, coniferous forest, tropical rainforest, grasslands, and desert. Key features of each biome such as climate, location, and common plant and animal species are described.