Write the geographic location of the United States, the main topographic features, the main types of climate and climate characteristics, major rivers, mineral resources

Geographic location: the United States is located in North America, east of the Atlantic Ocean, west of the Pacific Ocean, north of Canada, south of Mexico and the Gulf of Mexico, in addition to the Hawaiian Islands and Alaska. The mainland is roughly 68 ° W longitude to 124 ° W longitude, 33 ° N latitude to 48 ° N latitude.

Topographic features: The topography of the U.S. mainland is characterized by high east and west sides, low in the middle, and no east-west mountain ranges. The mainland can be roughly divided into three topographic regions. 1. the eastern Appalachian Mountains and the Atlantic Coastal Lowlands. 2. the western part of the Cordillera Mountain System. 3. the central Great Plains.

Climate characteristics: the United States has almost all the world's climate types (land across the cold, warm, hot three zones, the mainland in the temperate zone) to temperate continental climate. Topography has a significant impact on climate. Severe droughts are rare in primarily agricultural areas, flooding is infrequent, and temperatures are mild enough to produce adequate rainfall.

Resources: Natural resources are abundant. Mineral reserves of coal, petroleum, natural gas, iron ore, potash, phosphate, and sulfur are among the largest in the world. Strategic mineral resources such as titanium, manganese, cobalt and chromium are mainly imported. Proven coal reserves of 359.66 billion tons. Proven crude oil reserves of 27 billion barrels. Proven natural gas reserves of 560.34 billion cubic meters. The forest area is about 4.4 billion acres with 33% coverage.

Hydrology: The United States can be divided into three major water systems in general: where located east of the Rocky Mountains into the Atlantic Ocean rivers are called the Atlantic water system. Where the river into the Pacific Ocean is called the Pacific water system. The Great Lakes, a group of large lakes in east-central North America.