Zones are specific areas or regions that are defined by certain characteristics or purposes. For example, in geography, zones can refer to climate zones, which categorize areas based on temperature and precipitation patterns. In urban planning, zones can indicate land use, such as residential, commercial, or industrial zones, helping to organize how land is developed and used. In environmental science, zones can also refer to ecological zones, which classify areas based on their ecosystems and biodiversity. For instance, the tundra zone is characterized by cold temperatures and limited vegetation, while the tropical rainforest zone is known for its warm climate and rich biodiversity.