Era - uhlelo zezenzakalo. Yiziphi inkathi?

Era - liyinkathi esikhulu isikhathi, inkathi yomlando. Ngakho ngokuthi uhlelo kwezikhathi, kanye ekuqaleni kwalesi sikhathi. Umlando kuyiplanethi yethu zingahlukaniswa zibe nezikhathi. Phakathi kwabo, kuhluke ukushintsha kwesimo sezulu nokuma kwezwe ezithile, kanye intuthuko enkulu kakhulu ekuthuthukeni izilwane nezitshalo. Abaningi banesithakazelo, yiziphi yobudala kanye ngabantu abamelelwa yizo. Izigaba eyinhloko ukuthuthukiswa Zomhlaba.

inkathi archean

Ngalesi sikhathi, kwamiswa iplanethi yethu, isikhathi wathatha cishe isigidi sezigidi iminyaka. Ukuphila Emhlabeni akubanga, olwandle ka zamakhemikhali phakathi acid, alkalis, nosawoti. Inkathi Archean kuye kwavula into amaprotheni. Yingaleso sikhathi lapho baqala ukuvela eziphilayo.

inkathi proterozoic

Huge isikhathi nenkathi yale planethi, owathatha iminyaka engu-2 billion. Ngalesi sikhathi, ukuthuthukisa ulwelwe nama-bacterium, eziphilayo ukuthola yawo siqu, ziba ezinamangqamuzana amaningi. Era - isikhathi uma kukhona into entsha, Proterozoic esiteji ifomu avelele idiphozithi yanoma nsimbi. Le nkathi libhekene yokuthi zonke izinqubo zokuphila zenzeka olwandle.

Palaeozoic

Lena inkathi umehluko ushintsho unomphela izimo zezulu, ihlukaniswe yaba 6 izigaba. Ngalesi sikhathi, singakwazi ukuhlakulela yezimila nezilwane ezihlukahlukene, kukhona izinhlobo eziningi zezinhlanzi. Osebeni lomfula sikhule AmaConifers, Izinhlobo. Azungeze phakathi kwenkathi kwakungamadodana izilwane zasemhlabeni kuqala njengoba ezihuquzelayo, mabhungane, nezintethe. Isikhathi libhekene nezinxushunxushu njalo, ukushintsha bobunjwa amazwekazi.

Inkathi Mesozoic

Isigaba ehlanganisa Triassic, Jurassic nezikhathi Cretaceous. Inkathi Mesozoic - kuyinto ukuvela ezweni nasolwandle izimfudu, amaxoxo, izimfanzi, uhlobo olusha amarubi. Ubuswa kwezilwane ezihuquzelayo nezilwane izibankwakazi. Esikhathini yobudala emaphakathi lapho yizona ezimelela lokuqala wezinyoni zanamuhla futhi izinambuzane. I kwesikhathi Cretaceous kwaba ukushabalala pterosaurs futhi izibankwakazi.

Ngalesi sikhathi, ngcono izimo zezulu, futhi umphumela waba ukuthi izwe abahlala kulo linjani embozwe zasemazweni. On izwe kukhona kwezinhlobo lokuqala nomsayipuresi kanye pine izihlahla, nezitshalo eziqhakazayo. Enkathini yangaphambi kwezincwadi Mesozoic sebeqala babambisane izinambuzane nezimila. Phakathi nale nkathi, ukuncipha amazwekazi ukusithatha amafomu amasha futhi Ubukhulu, iziqhingi akhiwa ngenxa uqhekeko. Atlantic Ocean liyakhula ngobukhulu, ugcwalise amapheshana enkulu yezwe.

inkathi Cainozoic

"Iminyaka emingaki kuyinto enkathini yokugcina lapho kuhlala khona isintu ekuphileni?" - ngokuvamile kuchazwa lo mbuzo abantu. I Cenozoic inkathi (uhlala kuze kube yilolu suku) waqala engaba iminyaka eyizigidi eziyi-66 ezedlule. It zihlukaniswa obhekwe wezinyoni zanamuhla, ezincelisayo, angiosperms futhi, yebo, abantu. Maphakathi kwenkathi ubumbe cishe wonke amaqembu ayinhloko yemibuso nemvelo. Ngalesi sikhathi kukhona emaqeleni nezimfunda, izinhlobo ezintsha utshani, izihlahla. Futhi ngokwemvelo kwakheka main izinhlobo agrocenoses futhi biogeocenosis. Man uqala avumelane nendawo ezikuyo, ukusebenzisa imvelo ukuze sihlangabezane nezidingo siqu. Kuyinto abantu lashintshwa emhlabeni organic. I Cenozoic Era uhlukaniswe ezintathu nezikhathi: Paleogene, Neogene kanye neziNhlangano eziNgekho ngaPhansi kukaHulumeni. It uyaqhubeka namuhla.

Kubhekwe inkathi ahlukaniswe izici zezulu womhlaba. Kodwa kunezinye izinhlelo kwezikhathi. Ngokwesibonelo, esithi "nkathi yethu", eziningi ezenziwayo zihilela isinyathelo okuyinto evela Christmas. Kanti futhi, abantu siqale zezimboni, technotronic nezinye nezikhathi ukuthi into letihloniphekile, ziye zashintsha indlela abantu abacabanga ngazo mayelana nezwe, zashintsha isimo sengqondo ukuze eziphilayo.