Era komhlaba

Kwenye iimbombo yonke izigidi zeminyaka eyadlulayo, a dubulo enamandla. Ngenxa yoko umntu onjalo inkwenkwezi othukile, ngubani kudala efile, waba njengelifu enkulu. It Bajikile ndiwatshabalalise iintsalela zomzimba shushu. Izigidi iminyaka ezingaqhelekanga kunye amandla athile angabonakali endalo yatsala amasuntswana kwamafu, kanjalo bakha ibhola. A omtsha umzimba yasezulwini uyagangatheka kubume bayo yaye abe omkhulu ngakumbi. uxinzelelo ibonwe embindini kwisigaba ovuthayo umlilo, leyo akusekho kubuyekeza. Kweli langatye kugcwele umzimba uphela - nje ke ilanga wazalwa. Ukususela yokutyiwa iinkwenkwezi kwabafileyo wabumba ngokuhamba kwexesha kwaye iibhola-langa.

Phambi kokuba ekuqaleni kwexesha lokuqala uMhlaba sakhiwo kakhulu loose kunye evakalala, waba ngaphezu koko kwelanga ubukhulu bakhe. Ekuhambeni kwexesha, zilinganisiwe ibhola waza waqalisa ukushushubeza, kodwa ke likumyinge lupholisiwe. Ngaphambi kokuba abe ukubaleka emajukujukwini, kwaba nzima ukuqikelela nkqu eyiyona ubudala uMhlaba, kunye iisampuli ezivela enyangeni, nto leyo kuthathwa ukuba yobudala efanayo iplanethi yethu wabonisa ukuba ekuqaleni kwembali yophuhliso lwayo sabekwa kwiminyaka 4-4.6 billion eyadlulayo. Famous paleontologists ngexesha wadala esikhethekileyo isikali ixesha komhlaba, leyo, eneneni, kukuba umlando indalo kunye nophuhliso ubomi kwiplanethi enguMhlaba. Le abasakhasayo izigaba kunye nobudala Umhlaba, ubude ezinye kwabo amakhulu ezigidi zeminyaka.

Archaea. Kwakukule xesha baqala nasekusungulweni Yomhlaba. Iminyaka billion emibini enesiqingatha, umhlaba iphela, yaye camera kunye uqweqwe ngamatye eqinileyo, mpilo apha emoyeni. Xa lobushushu lifikelela degrees ezilikhulu Celsius, isibhakabhaka uqinisa fu kunye enzima imvula. Emva koko, phezu komhlaba wonke baba iilwandle kunye neelwandle, apho ubomi baqalisa kamva - zeeseli ukuba ingakhupha ioksijini.

Proterozoic. Landela ixesha Archean behlabathi ibe ngaphezu kokuba sinxulumane izinto eziphilayo. Xa amaxesha Proterozoic kuvela eziphilayo multicellular. eziphilayo Single ezineseli yahlanganiswa, banda ubukhulu kwaye enze ngumongo kunye ndizayo. A umkhosi iintlobo ezahlukeneyo ulwakhiwo ngayo izinto eziphilayo.

PALEOZOIC. Kumaxesha Paleozoic waqalisa yophuhliso esebenzayo yomhlaba eziphilayo zaselwandle. Eli nqanaba ke lahlulwe izazinzulu for zaphawula ezongezelelweyo okanye ixesha, nto leyo eyenza kube lula ukufunda ngokweenkcukacha ezingakumbi.

Cambrian. Era saziwa kakhulu ngokuba 'revolution skeletal ". Kwaye kwenziwe akulolize, kuba ngelo xesha eziphilayo ezikhoyo ezifunyenwe amathambo eziqinileyo, kwakunye zakho iimpahla zakhe zokutyhomfa, "izindlu 'kunye lukhule.

Ordovician. Ngeli xesha ke walawula izidalwa ngubani ukude yayifana noonomadudwane mihla kunye izigcawu eziyityhefu. wabonakala yesilwanyana saselwandle esineqokobhe encinane. Kodwa mpumelelo ibalulekileyo yale xesha - ukuvela ekuyo, ingakumbi - chordates.

Silurian. Ithuba omtsha laziwa ngokuba loyamano intlanzi, ulele, eshiya ulwandle nomhlaba kunye ukubonakala kwezityalo kwi zeengxondorha.

Devon. Abaphengululi abaninzi baye ngokuba eli xesha "ubukumkani yeentlanzi." Ukuqhubeka yokuzivelela kwezinto eziphila.

Carbon. Kuyasa enezityalo nezilwanyana: zonke Wakhula eluhlaza, zidubule. Kwakukho iminyanya Conifers zanamhlanje. Izinambuzane balufunda emoyeni. Abanye babo baba ubungakanani elikhulu: umzekelo, umda amaphiko ledragonfly kufika iimitha ezimbini.

Perm. Perm - intlango namandla leminyaka. Ngeli xesha, Pangea kwasekwa.

Ixesha yoMhlaba kunye ukufunda ivumela ngamnye kuthi ukwazi imbali imvelaphi ihlabathi lethu elikhethekileyo indalo, ubomi kunye nophuhliso zonke orgasms kakhulu kwiplanethi yethu. Imbali iplanethi yethu - kuba yeyona obufihlakeleyo yonke ekhoyo namhlanje, kwaye ukuba uyazi imithetho yayo, kusenokwenzeka ukuba ufumane oluninzi umdla engalindelekanga kunye.