Nyika yaitonga

Mune rimwe makona pezvakasikwa mamiriyoni akawanda apfuura, pakuputika simba. Somugumisiro akadaro ndisingafungiri nyeredzi, uyo refu akararama wake, iye akava akafanana rakakura gore. It vakakosa kumativi uye nokuparadza vakasara kupopotedzana muviri. Mamiriyoni makore ausingazivi uye zvinoshamisa zvakasikwa akakwezva tudonhwe makore, nokudaro wezvamatongerwe bhora. A itsva muviri yokudenga iri nekuumbanidzwa kwaro marongerwo uye anova akakura. Zvisati kumanikidzwa pakati nokure moto, yakanga isisiri kuripa. murazvo ichi rakazara muviri wose - chete saka zuva akaberekwa. Kubva vakasara nyeredzi akafa yakaumbwa pamusoro nguva uye mabhora-nyika.

Asati pakutanga wokutanga yaitonga kweNyika mamiriro akanga inotsikwa chaizvo uye unzenza, wake saizi kwaitoda kupfuura zuva. Nokufamba kwenguva, nekuumbanidzwa bhora uye akatanga anodziya, asi zvino kwayo pamusoro iri haachandidi. Vasati akava zvichibvira ndege muchadenga, zvakanga zvisingaiti kufungidzira kunyange anofungidzirwa zera Nyika, uye ivhu kubva mwedzi, izvo vaiona kuti vezera redu kwakaratidza kuti pakutanga munhoroondo yacho kukura dzateyiwa mabhiriyoni 4-4.6 apfuura. Famous paleontologists panguva akasika rinokosha geologic nguva scale, iyo, chaizvoizvo, ndiyo rondedzero Zvisikwa uye kukura upenyu Panyika. chikero ichi yakakamurwa kupinda nguva uye zera Nyika, kureba vamwe vavo vari mazana emamiriyoni kwemakore.

Archaea. Zvaive munguva iyi akatanga shanduka Pasi. Nokuti maviri nehafu bhiriyoni makore, nyika dzaserera uye Coated anyatsonzwisisa ibwe goko, okisijeni yaiva mumhepo. Apo tembiricha zvasvika ane madhigirii zana Celsius, denga riri akasungirirwa gobvu makore uye rinorema mvura. Zvadaro, pamusoro pemvura yose vaiva mumakungwa uye nyanza, umo upenyu hwakatanga papera - masero roga kuti anogona kusunungura oxygen.

Proterozoic. Kutevera Archean yaitonga Nyika kwerinopfuura achisonganira zvipenyu. Mune nguva Proterozoic kuzviratidze zvipuka zvine masero akawanda zvinenge. Single-celled zvinenge zvakanga zvabatanidzwa, akakura ari kukura uye dzinoumba neerekitironi membrane. A hondo zvakasiyana siyana pakuvaka sechivako zvipenyu.

PALEOZOIC. Munguva Paleozoic akatanga vanoshingaira kukura nyika zvomumvura zvinenge. Danho iri yakakamurwa masayendisiti okuwedzera eras kana nguva, zvinoita kuti tikwanise kudzidza navo zvizere.

YeCambrian. Era rinozivikanwa zvikuru se "skeletal chimurenga". uye zviri kuitwa hakusi pasina, nokuti panguva iyoyo huripo zvinenge vakatodzidza zvikukutu marangwanda, uyewo yakatesvera panyanga dzacho, "dzimba" uye anoshongwa.

Ordovician. Panguva ino isu akatonga zvisikwa uyo ari kure akafanana nezvinyavada ano uye muchetura madandaude. dzemugungwa duku rakaonekwawo. Asi chinonyanya kukosha budiriro iri nguva - the kwaita vertebrates, uye zvakawanda zvakananga - chordates.

Silurian. A nguva itsva aizivikanwa imwe dikidiki hove, algae, tichisiya gungwa kunyika uye chitarisiko zvinomera pamatombo.

Devon. Nyanzvi dzakawanda ndakadana nguva iyi "umambo hove." Akaramba shanduka uye yenyika zvinenge.

Kabhoni. Dawn kuti kasvisto uye fauna of vose vakakura mutema, flowered. Paiva madzitateguru Conifers vanhasi. Tupukanana nyanzvi mhepo. Vamwe vavo yaiva size: somuenzaniso, kukura kwebasa remukonikoni mapapiro vaigona kusvika mamita maviri.

Perm. Perm - remakore kuvakunda mumarenje. Panguva iyi, Pangea yakatangwa.

Nguva Earth vavo kudzidza kunoita mumwe nomumwe wedu kuziva nhoroondo kwakatangira nyika yedu yakasiyana hunhu, upenyu uye kugadzira orgasms zvose panyika. Nhoroondo yedu - ndiwo kupfuura asinganzwisisiki zvose ariko nhasi, uye kana uchiziva mitemo yayo, zvinokwanisika kuona zvizhinji dzinonakidza uye zvisingatarisirwi.