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Реферат United states of America: geography, history, culture





ke Arizona, New Mexico, Texas, Oklahoma and western portions of Arkansas and Louisiana) is the hottest and high rainfall region of the US. You must be prepared to face heavy rains accompanied with thunder storms, dangerous lightening and occasional tornadoes. The winters are generally short but some freezing rains do occur. The spring and fall seasons are quite long and temperatures are generally excellent. The summers are very hot with temperatures approaching and exceeding 100 degree F on many days.clothes: You will need moderate warm clothes for winters. Raincoats are a must. p align="justify"> Natural resources : coal, copper, lead, molybdenum, phosphates, uranium, bauxite, gold, iron, mercury, nickel, potash, silver, tungsten, zinc, petroleum, natural gas, timber

Environmental Problems:

Habitat loss represents a major environmental issue which affects not only the biodiversity of ecosystems, but humans as well. A report by the US Geological Survey identified grasslands, savannas, and barrens as the most critically endangered habitats in the United States, with losses up to 98 percent of the original habitat at European settlement. As a result, the Nature Conservancy estimates that 217 plant species and 71 animals special became extinct. With this loss of habitat, there is an increased risk of human-wildlife conflicts as populations struggle to meet their ecological needs.pollution impacts every aspect of life in the United States and on the planet. Air pollution is so deadly because of its mobility. It can cause environmental issues far from its source, not unlike NSP. It can pollute the soil and aquatic resources through acid rain formation. It affects plants by negatively impacting their physiology, causing low crop yields and a reduction in plant vitality.Air pollution also affects humans. Pollutants in industrial emissions cause anything from minor throat irritation to aggravation of existing respiratory conditions, to an increased risk of cancer.are some of the environmental issues in the United States? The problems with the most widespread impacts represent some of the greatest threats. These environmental issues show that national as well as local solutions are necessary to reduce the impacts on the environment. It is only through recognition of the existing problems and scrutiny of current practices can solutions be developed. Acid rain is a serious environmental problem that affects large parts of the United States and Canada. Acid rain is particularly damaging to lakes, streams, and forests and the plants and animals that live in these ecosystems. br/>

5. War for Independence

of the War.first of a series of wars of independence that ended European control of both North and South America. The conflict between Britain and her American colonists was triggered by th...


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