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Shaded relief map of the United States, showing 10 geological provinces The richly textured landscape of the United States is a product of the dueling forces of plate tectonics, weathering and erosion. Over the 4.5 billion-year history of the Earth, tectonic upheavals and colliding plates have raised great mountain ranges while the forces of ...
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Urban wildlife is wildlife that can live or thrive in urban/suburban environments or around densely populated human settlements such as towns. Some urban wildlife, such as house mice , are synanthropic , ecologically associated with and even evolved to become entirely dependent on human habitats .
Ecoregions of North America, featuring the 50 United States, the District of Columbia and the five inhabited territories. The following is a list of ecoregions in the United States as identified by the World Wide Fund for Nature (WWF). The United States is a megadiverse country with a high level of endemism across a wide variety of ecosystems.
Lakes with an absence of D. kenai allow smaller copepod species such as D. tymelli to exist in higher numbers. This correlation suggests predation of large copepods on smaller copepod species. In lakes that are deeper and have limited trout reproduction cohabitation has been observed with an overall reduced body size for D.kenai. [ 8 ]
The bald eagle is the national bird of the United States and appears on its Great Seal.The bald eagle's range includes all of the contiguous United States and Alaska.. The fauna of the United States of America is all the animals living in the Continental United States and its surrounding seas and islands, the Hawaiian Archipelago, Alaska in the Arctic, and several island-territories in the ...
The Connecticut Lakes, headwaters of the Connecticut River, lie at the northern tip of the region. The main industries aside from tourism are logging and paper manufacture, centered on Berlin. There are no major freeways; nearly all roads outside of the few population centers are two-lane state highways.
The new towns of Littoria (1932, now Latina), Sabaudia (1934), Pontinia (1935), Aprilia (1937), and Pomezia (1939) were founded, side by side with several other small borghi (rural villages). The carefully differentiated architecture and urban planning aspects of these towns is striking even today.