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Urban wildlife can be found at any latitude that supports human dwellings - the list of animals that will venture into urbanized human settlements to forage on horticultures or to scavenge from trash runs from monkeys in the tropics to polar bears in the Arctic. Different types of urban areas support different kinds of wildlife.
Resource availability also acts as a selective force in urban evolution, influencing the survival and reproductive success of species living in cities. Urban areas offer a distinctive array of resources, including food sources like garbage, human waste, and crops, often differing in quantity and quality from those found in natural habitats.
It includes partners from at least 5 continents, 26 countries, and 160 cities. [2] [3] As a field study of evolution, and as a global study of the effects of urbanization on evolution, its scale is unprecedented. [4] It has been described as "the best replicated test of parallel evolution, on the largest scale ever attempted". [5]
National Geographic Traveller’s 2024 ‘cool list’ includes a roster of 30 places and experiences.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
List of largest cities by area Notes ^ For urban/metropolitan areas that have more than one core city , the figure for their city proper should use either the most populous one (e.g. Dallas for Dallas–Fort Worth metroplex ) or the best-known one (e.g. Manila for Metro Manila , instead of Quezon City ).
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Evolution is the change in the heritable characteristics of biological populations over successive generations. [1] [2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. [3]