Which of the following is NOT one of the major biomes recognized by ecologists?

The classification of biomes is based on distinct ecological characteristics, such as climate, soil, plants, and animals. Major biomes recognized by ecologists typically include categories like aquatic, forest, grassland, desert, and tundra. These classifications reflect natural environments that have developed under specific ecological and climatic conditions.

Urban environments, on the other hand, are influenced heavily by human activity and do not fit into the natural biome classifications established by ecologists. While urban areas can have ecological effects and interactions, they are not classified as a natural biome but rather as modified environments created through urbanization and development. Thus, it is accurate to say that urban is not one of the major biomes recognized in ecological studies. Recognizing this distinction helps in understanding how natural ecosystems operate versus those heavily influenced or constructed by human development.