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If all birds in one area would make a population. Not all birds can live together.
No such graphs exist. Kangaroo populations fluctuate widely with the seasons, with droughts and floods. It should be remembered also that there are over 60 species of kangaroos in Australia, and populations of each species vary. Data for the Red Kangaroo and Grey Kangaroo in just one region of New South Wales are available at the related link below, but it is not available in a graph. It is a trend that would be repeated in many places around Australia, but which would vary greatly with the states and the season.
Species distribution is the manner in which a biological taxon is spatially arranged. Species distribution is not to be confused with dispersal, which is the movement of individuals away from their area of origin or from centers of high population density. A similar concept is the species range. A species range is often represented with a species range map. Biogeographers try to understand the factors determining a species' distribution. The pattern of distribution is not permanent for each species. Distribution patterns can change seasonally, in response to the availability of resources, and also depending on the scale at which they are viewed. Dispersion usually takes place at the time of reproduction. Populations within a species are translocated through many methods, including dispersal by people, wind, water and animals. Humans are one of the largest distributors due to the current trends in globalization and the expanse of the transportation industry. For example, large tankers often fill their ballasts with water at one port and empty them in another, causing a wider distribution of aquatic species. United Nations Farms
There is no one formula for surface area for all shapes. Basically, it is the sum of all the faces and laterals.
A colony.