The United States have many kinds of climate. From the Arctic in Alaska to subtropics in Florida. A majority of the area of the USA has got a moderate climate. But we can divide it into four regions. The Atlantic Coast is relatively cold, occasionally with heavy snowfalls in winter. The Central Plains have very humid summers and cold winters with strong winds. In the west there are cold winters and hot dry summers. The weather in the north often differs from that in the south. The Death Valley in California is about the hottest place on earth in summer. California, Arizona, New Mexico and Florida belong to the so-called Sun Belt States. The Middle West winters are cold and long. But the summers are very hot and we can find deserts and semi-deserts here. East of the Mississippi river and south of the Great Plains, cold and warm streams often meet. Therefore in this area there are often tornadoes. In Montana or Alaska there are terrible frosts. The Hawaiian Islands have got a very pleasant and warm climate. There are minimal differences between summers and winters.
Due to the differing climate, the plant kingdom is also various. Deep forests are still in the Appalachian Mountains, in the Cordilleras and on the Pacific shore. In the west part of the Central Plains there are prairies used for agriculture or as grassland. Inside the Cordilleras there are some kinds of semi-desert flora. In Alaska there is diverse flora. We can find some kinds of moss and lichen[1] there. In the Hawaii, the flora is typically tropical.
[1] lišejník
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