United States of America ili ndi maubwino ambiri achilengedwe. Awa ndi mapiri, mitsinje, nyanja, ndi mtundu wa nyama. Komabe, mchere umagwira gawo lalikulu pazinthu zina.
Zida zamchere
Zomwe zili zamphamvu kwambiri pazakale zakale zaku US ndizovuta zamafuta ndi zamagetsi. M'dzikoli, madera ambiri amakhala ndi beseni momwe mumayikamo malasha. Madera amapezeka mdera la Appalachian ndi Rocky Mountains, komanso dera la Central Plains. Lignite ndi coking malasha amapukutidwa pano. Pali malo ochepa osungira mpweya wachilengedwe komanso mafuta. Ku America, amayimbidwa ku Alaska, ku Gulf of Mexico ndi madera ena amkati mdziko muno (ku California, Kansas, Michigan, Missouri, Illinois, ndi zina zambiri). Ponena za nkhokwe za "golide wakuda", boma limakhala lachiwiri padziko lapansi.
Iron ore ndi njira ina yayikulu yothandiza ku chuma cha America. Amayikidwa m'migodi ku Michigan ndi Minnesota. Mwambiri, hematites apamwamba amaponyedwa pano, pomwe chitsulo chimakhala pafupifupi 50%. Mwa zina mchere, mkuwa ndi ofunika kutchula. United States imakhala yachiwiri padziko lonse lapansi pazitsulo izi.
M'dzikoli muli miyala yambiri yama polymetallic. Mwachitsanzo, miyala ya lead-zinc imayendetsedwa pamitundu yayikulu. Pali madipoziti ambiri ndi miyala ya uranium. Kutulutsa kwa apatite ndi phosphorite ndikofunikira kwambiri. United States imakhala yachiwiri pamigodi ya siliva ndi golide. Kuphatikiza apo, dzikolo lili ndi ma tungsten, platinamu, vera, molybdenum ndi mchere wina.
Malo ndi zinthu zachilengedwe
Pakatikati pa dzikolo pali nthaka yakuda yolemera, ndipo pafupifupi yonse imalimidwa ndi anthu. Mbewu zamtundu uliwonse, mbewu zamakampani ndi ndiwo zamasamba zimalimidwa kuno. Malo ambiri amakhalanso ndi malo odyetserako ziweto. Zida zina zapadziko lapansi (kumwera ndi kumpoto) sizoyenera ulimi, koma amagwiritsa ntchito ukadaulo wosiyanasiyana waulimi, womwe umakupatsani mwayi wopeza zokolola zambiri.
Pafupifupi 33% ya madera aku US amakhala ndi nkhalango, zomwe ndizofunika mdziko lonse. Kwenikweni, pali malo osakanikirana a nkhalango, pomwe mitengo ndi mitengo ikuluikulu imakula limodzi ndi mitengo ya paini. Kum'mwera kwa dzikolo, nyengo imakhala yowuma kwambiri, chifukwa chake ma magnolias ndi mbewu za labala zimapezeka kuno. Kudera lamapululu komanso achipululu, cacti, zokoma, ndi zitsamba zimakula.
Kusiyanasiyana kwa nyama kumadalira malo achilengedwe. USA ili ndi ma raccoon ndi minks, skunks ndi ferrets, hares ndi lemmings, mimbulu ndi nkhandwe, agwape ndi zimbalangondo, njati ndi akavalo, abuluzi, njoka, tizilombo ndi mbalame zambiri.
