Bird Wallpapers For Desktop Biography
A biological community consists of all of the organisms -- microbes, plants, and animals -- that live in an area. A community, together with the physical environment to which it is tied by a series of processes (such as the production of oxygen by plants and its use by animals, and the reciprocal production of carbon dioxide by animals and its use by plants), is called an ecosystem. How the species composition of communities is determined, and how those species interact with each other and with their inanimate surroundings, are major foci of ecological research.
In order to simplify the investigation of communities, ecologists usually study some subset of the organisms present, either a functional complex such as a group of herbivores and the plant species they feed on, or a taxonomic group, such as the resident insects or birds. Thus one may read about "mammal communities" or "bird communities." Unlike mammals (which are often nocturnal and secretive), birds are relatively easy to observe; hence, a great deal of research has been done on avian communities.
A biological community consists of all of the organisms -- microbes, plants, and animals -- that live in an area. A community, together with the physical environment to which it is tied by a series of processes (such as the production of oxygen by plants and its use by animals, and the reciprocal production of carbon dioxide by animals and its use by plants), is called an ecosystem. How the species composition of communities is determined, and how those species interact with each other and with their inanimate surroundings, are major foci of ecological research.
In order to simplify the investigation of communities, ecologists usually study some subset of the organisms present, either a functional complex such as a group of herbivores and the plant species they feed on, or a taxonomic group, such as the resident insects or birds. Thus one may read about "mammal communities" or "bird communities." Unlike mammals (which are often nocturnal and secretive), birds are relatively easy to observe; hence, a great deal of research has been done on avian communities.
Bird Wallpapers For Desktop
Bird Wallpapers For Desktop
Bird Wallpapers For Desktop
Bird Wallpapers For Desktop
Bird Wallpapers For Desktop
Bird Wallpapers For Desktop
Bird Wallpapers For Desktop
Bird Wallpapers For Desktop
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