Era - inkqubo ubalo. Ngawaphi kwexesha?

Era - ixesha kwexesha elikhulu, ixesha zembali. Ngoko wabiza inkqubo maxesha, kwakunye ekuqaleni kweli xesha. Imbali iplanethi yethu lungohlulwa lube lwamathuba. Phakathi kwabo, ukuba zahluke neenguqu zemozulu neendawo ezithile, ngokunjalo idabi ebalulekileyo kuphuhliso yezilwanyana nezityalo. Abaninzi banomdla, yintoni le yobudala nento ababameleyo. Eyona engundoqo amanqanaba yophuhliso Umhlaba.

era archean

Ngeli xesha, wasekwa iplanethi yethu, ixesha yathatha malunga neebhiliyoni iminyaka. akubanga Ubomi Emhlabeni, xa olwandle of ekudibaneni kwemichiza phakathi asidi, alkalis, iityuwa. era Archean usinike kubekho into protein. Yaba ke waqalisa kuvela izinto eziphilayo.

era proterozoic

ixesha Ubude Huge le planethi, eyathatha malunga 2 billion kwiminyaka. Ngeli xesha, ukuphuhlisa ulele neentsholongwane, eziphilayo bafumane imizimba yabo, ukuba babe multicellular. Era - kukho ixesha xa kukho into entsha, isigaba uhlobo Proterozoic othile owahlukileyo iidipozithi of yentsimbi ekrwada. Eli xesha luphawulwa yokuba zonke iinkqubo zobomi kuqhubeka olwandle.

Palaeozoic

Lo mahluko ixesha na utshintsho isigxina iimeko zemozulu, yahlulelwe ngezigaba 6. Ngeli xesha, nokuphuhlisa izityalo nezilwanyana, kukho iintlobo ezininzi yeentlanzi. Ecaleni iibhanki bekhula Conifers, kumila. Ehlabathini phakathi kwexesha aba eziphila yokuqala ezirhubuluzayo, ooqongqothwane, iintethe. Ixesha luphawulwa kuphazamiseka rhoqo, ukutshintsha Iimfano amazwekazi.

Ixesha Mesozoic

Isigaba equka Triassic, സോഫ്റ്റ്വെയര് isoftwe amaxesha Cretaceous. Ixesha Mesozoic - na ukuvela ulwandle nomhlaba amahobe, amasele, Shrimp, iintlobo ezintsha kwelekorale. Esilawulwa ezirhubuluzayo Dinosaurs. Xa yobudala ophakathi kukho abameli zokuqala iintaka mihla kunye nezinambuzane. Eli xesha Cretaceous yaba kukutshabalala pterosaurs kunye Dinosaurs.

Ngeli xesha, ukuphuculwa iimeko zemozulu, kangangokuba ilizwe ligutyungelwe ngobunono. Kumhlaba kukho iintlobo yokuqala ezithile zomcypress kunye nompleyini imithi, kunye nezityalo kweentyatyambo. Xa era Mesozoic aqalile ukusebenzisana izinambuzane kunye nezityalo. Ngeli xesha, amazwekazi uthathe kwiifomu ezintsha kunye nemilinganiso, iziqithi akhiwa ngenxa uqhekeko. Atlantic Ocean yanda ngobukhulu, nezikhukula ezinkulu zomhlaba.

era Cainozoic

"Mingaphi iminyaka ke ixesha lokugqibela apho abantu ubomi?" - ngokufuthi ezichazwe aba bantu mbuzo. I-Cenozoic era (buhlala unanamhla) malunga nowama-66 yezigidi kwiminyaka eyadlulayo. It wamahlula kokufika iintaka mihla, ezanyisayo, angiosperms kunye, Kakade ke, abantu. Phakathi kwexesha kuye kwasekwa phantse onke amaqela aphambili yezikumkani endalo. Ngeli xesha kukho emaqeleni kunye amadlelo, iindidi ezintsha zengca, amatyholo. Kwakhona kwindalo wabumba eziphambili iintlobo agrocenoses kunye biogeocenosis. Umntu uqalisa kwimo engqongileyo, ukusebenzisa uhlobo ukuhlangabezana neemfuno zakho. Kuba abantu kamva batshintsha ihlabathi ephilayo. I Cenozoic Era wahlulwe ezintathu zexesha: Paleogene, Neogene kunye koqeqesho. It uyaqhubeka namhlanje.

Kugqalwa xesha ezahlulwe ngeempawu zemozulu neendawo. Kodwa kukho ezinye iinkqubo maxesha. Umzekelo, esithi "ixesha lethu", abaninzi zibandakanya inyathelo oluvela evela iKrismesi. Kwakhona, abantu bahamba le mveliso, technotronic kunye nezinye izihlandlo ukuba into ezihloniphekileyo, awuyitshintshanga le ndlela abantu abacinga ngayo ihlabathi, watshintsha isimo sengqondo izinto eziphilayo.