I-United States of America inezinzuzo eziningi zemvelo. Lezi yizintaba, imifula, amachibi, nohlobo lwesilwane. Kodwa-ke, amaminerali adlala indima enkulu phakathi kwezinye izinsiza.
Izinsiza zezimbiwa phansi
Okunamandla kakhulu phakathi kwezinsalela zase-US yinkimbinkimbi kaphethiloli namandla. Ezweni, insimu eningi ihlala umcengezi okumbiwa kuwo amalahle. Izifundazwe zitholakala esifundeni i-Appalachian kanye neRocky Mountains esifundeni, kanye nasesifundeni i-Central Plains. Amalahle e-Lignite nawokupheka agaywe lapha. Kunenqwaba yezinqolobane zegesi yemvelo namafutha. EMelika, zimbiwa e-Alaska, eGulf of Mexico nakwezinye izifunda zangaphakathi zezwe (California, Kansas, Michigan, Missouri, Illinois, njll.). Ngokwezinqolobane "zegolide elimnyama", umbuso ulala isibili emhlabeni.
I-iron ore ingenye insiza enkulu yamasu omnotho waseMelika. Zimbiwa eMichigan naseMinnesota. Ngokuvamile, ama-hematites asezingeni eliphakeme ambiwa lapha, lapho okuqukethwe yensimbi okungenani kungama-50%. Phakathi kwamanye amaminerali e-ore, kufanelekile ukubalula ithusi. I-United States ilala isibili emhlabeni ekukhipheni le nsimbi.
Kunezinhlobo eziningi zamapayipi we-polymetallic ezweni. Isibonelo, ama-lead-zinc ores ayembiwa kumanani amakhulu. Kunamadiphozithi amaningi kanye ne-uranium ores. Ukukhishwa kwe-apatite ne-phosphorite kubaluleke kakhulu. I-United States ilala isibili ngokwesimayini sesiliva negolide. Ngaphezu kwalokho, izwe linamadiphozithi e-tungsten, i-platinum, i-vera, i-molybdenum namanye amaminerali.
Izinsiza zomhlaba nezendalo
Maphakathi nezwe kunomhlabathi omnyama ocebile, futhi cishe yonke ilinywa ngabantu. Zonke izinhlobo zamabele, izitshalo zezimboni nemifino zitshalwa lapha. Umhlaba omningi futhi uhlala emadlelweni emfuyo. Eminye imithombo yomhlaba (eningizimu nasenyakatho) ayifanele kakhulu ezolimo, kepha zisebenzisa ubuchwepheshe obuhlukile bezolimo, obukuvumela ukuthi uqoqe isivuno esihle.
Cishe ama-33% endawo yase-US kuhlala amahlathi, ayigugu lesizwe. Ngokuyinhloko, kunezindawo zemvelo zamahlathi ezihlanganisiwe, lapho kukhula khona ama-birch nama-oki kanye nemithi yompayini. Eningizimu yezwe, isimo sezulu somile kakhulu, ngakho-ke ama-magnolias nezitshalo zenjoloba kuyatholakala lapha. Endaweni yezingwadule nezingwadule, kukhula ama-cacti, ama-succulents kanye nama-semi shrub.
Ukwehlukahluka komhlaba wezilwane kuncike ezindaweni zemvelo. I-USA iyikhaya lama-raccoon kanye neziminki, ama-skunks nama-ferrets, ama-hares nama-lemmings, izimpisi nezimpungushe, izinyamazane namabhere, i-bison namahhashi, izibankwa, izinyoka, izinambuzane nezinyoni eziningi.
