Yonke imithombo yemvelo yomhlaba wethu, ngokuya ngohlobo lokukhathala, ihlukaniswe yaba yinto engapheli futhi engapheli. Uma konke kucacile ngeyokuqala - isintu ngeke sikwazi ukuwasebenzisa ngokugcwele, ngakho-ke okuqedayo kuba nzima ngokwengeziwe. Futhi bahlukaniswe baba yizinhlobo ezincane kuya ngezinga lokuvuselelwa:
- okungavuseleleki - inhlabathi, amadwala namaminerali;
- evuselelekayo - izitshalo nezilwane;
- ayivuselelwa ngokuphelele - amasimu alinyiwe, amanye amahlathi nemizimba yamanzi ezwenikazi.
Ukusetshenziswa kwamaminerali
Izinsizakusebenza zamaminerali zibhekisa emithonjeni yemvelo ephelayo nengavuseleleki. Abantu bebelokhu bezisebenzisa kusukela ezikhathini zasendulo. Onke amadwala namaminerali amelwe kwiplanethi ngokungalingani nangamanani ahlukahlukene. Uma kunenqwaba yezinsizakusebenza futhi akudingeki ukhathazeke ngokuzisebenzisa, ezinye zibiza isisindo sazo ngegolide. Isibonelo, namuhla kunenkinga yemithombo kaphethiloli:
- izinqolobane zikawoyela zizohlala cishe iminyaka engama-50;
- izinqolobane zegesi yemvelo zizophela cishe eminyakeni engama-55;
- amalahle azohlala iminyaka eyi-150-200, ngokusho kwezibikezelo ezahlukahlukene.
Ngokuya ngenani lezinqolobane zezinsizakusebenza ezithile, zinamanani ahlukile. Ngaphezu kwezinsizakusebenza zikaphethiloli, amaminerali abaluleke kakhulu izinsimbi eziyigugu (i-californium, i-rhodium, i-platinum, igolide, i-osmium, i-iridium) namatshe (i-eremeevite, i-garnet eluhlaza okwesibhakabhaka, i-opal emnyama, i-demantoid, idayimane elibomvu, i-taaffeite, i-poudretteite, i-musgravite, i-benitoite, isafire, i-emerald, i-alexandrite, i-ruby, i-jadeite).
Izinsiza zenhlabathi
Indawo ebaluleke kakhulu ebusweni bomhlaba iyalinywa, ilinywe, isetshenziselwa ukutshala izitshalo kanye namadlelo emfuyo. Futhi, ingxenye yensimu isetshenziselwa ukuhlala, izakhiwo zezimboni kanye nokuthuthukiswa kwensimu. Konke lokhu kwenza isimo senhlabathi sibe sibi kakhulu, kubambezele inqubo yokubuyiselwa kwenhlabathi, futhi kwesinye isikhathi kuholele ekuqothulweni kwayo, ekungcolisweni nasogwadule lomhlaba. Ukuzamazama komhlaba okwenziwe umuntu kungenye yemiphumela yalokhu.
Izimbali nezilwane
Izitshalo, njengezilwane, ziyimithombo evuseleleka ngokwengxenye yomhlaba, kodwa ngenxa yokusetshenziswa kwazo, inkinga yokuqothulwa cishe kwezinhlobo eziningi ingavela. Cishe izinhlobo ezintathu zezinto eziphilayo ziyanyamalala ebusweni bomhlaba njalo ngehora. Izinguquko ezimibalabala nasezilwanyaneni ziholela emiphumeleni engalungiseki. Lokhu akukhona nje ukubhujiswa kwemvelo, njengokucekelwa phansi kwamahlathi, kepha ushintsho emvelweni jikelele.
Ngakho-ke, imithombo yemvelo ephelayo yomhlaba inenani elithile ngoba inika impilo kubantu, kepha izinga lokululama kwabo liphansi kakhulu kangangokuthi alibalwa ngeminyaka, kodwa eminyakeni eyizinkulungwane ngisho nezigidi zeminyaka. Akubona bonke abantu abazi ngalokhu, kepha kuyadingeka ukuthi kusindiswe izinzuzo zemvelo namuhla, ngoba okunye ukubhujiswa akusakwazi ukulungiswa.
