Nau'in na haifuwa

Nau'in na haifuwa canza tare da ci gaban wayewar dan adam. Kwararru na uku main saukarwa ta hanyar abin da al'umma shige Stage appropriating tattalin arziki, da aikin gona da kuma masana'antu. A wannan batun, da kuma rarraba da iri haifuwa.

Archetype ne halayyar da dama dubban shekaru daga farkon tarihin mutane. Wannan na farko da irin yawan haifuwa ya tashi karkashin mulkin assigning (farauta, taro, kama kifi) tattalin arzikin. A halayyar alama ne m dogara mutane daga kewaye yanayi.

A prehistoric lokacin da aka halin kananan size da kuma low girma kudi na yawan jama'ar. A hankali appropriating da tattalin arzikin motsa zuwa wani samar da (m) - suka fara samar da shanu waddan da kuma aikin noma. Wannan zamani ne ake kira "Neolithic juyin juya halin." Saboda haka, abubuwan da ake bukata don ci gaba da wadannan irin.

Akwai wani biyu irin haifuwa, na yawan jama'ar a kan da dama millennia. Wannan lokaci da aka halin da kusan cikakkiyar mamayar da agrarian tattalin arziki. Babban Manuniya a wannan mataki sun high matakan da haihuwa da kuma mace-mace. A daidai wannan lokaci, wanda shi ne na hali, da karshen lokacin da zamani overlaps na farko, wadda daga ƙarshe ta kai ga low girma a cikin yawan. A cewar demographers, babban kayyadewa, sa'an nan, shi ne mutuwa kudi, a wasu hanya ta da da haihuwa kudi. Sauran iri haifuwa halin da sauran ci gaban da sunadaran.

A muhimmanci lokaci a ci gaba, na] aukacin tattalin arzikin na al'umma shi ne zamanin da juyin juya halin masana'antu zamanai 18-19. Kamar yadda ka sani, da juyin juya halin masana'antu a Turai, da kuma karni na 20th, suka rufe dukkan kasashen duniya. A wannan lokacin, shi ya fara daukar siffar da zamani irin na haifuwa, na yawan jama'ar.

Wani sabon mataki na ci gaba da jama'a halin da fuskantarwa zuwa ga samuwar wani mabanbanta alƙaluma da halin da ake ciki, da yin amfani da mabanbanta sunadaran.

Man da ya zama kasa dogara a kan yanayi, kiwon lafiya ya samu gagarumar nasara, inganta] aukacin halin rayuwar - duk wannan ya haddasa wani alama raguwa a mace-mace, da kara tsawon rayuwar (talakawan). Wadannan dalilai sun sa a wata karuwa da na halitta karuwa.

Ba kalla na wanda bai da sauran iri haifuwa, a cikin sabon mataki da za a dauke gagarumin sassauci da kuma aiki na alƙaluma da dangantakar, samar da iyalai da 'yancin zabi. A lokaci guda akwai wani gagarumin karuwa a yadda ya dace, manageability a cikin wannan lokaci. Kwararru a wannan mahallin ake magana a kai a matsayin wani zamani nau'i na haifuwa na m irin.

All alƙaluma da matakai bukatar a-zurfin bincike da kuma sa'an nan fassara. A cikin shakka daga karatunsu, ya bayyana manufar alƙaluma da sauyin da juyin juya halin. A cewar wasu kafofin, wadannan fassarorin da ake gani a matsayin m. A wasu alƙaluma da juyin juya halin shi ne halin da kammala mika mulki. A irin haka ne muka yi magana na uku juyin a tarihin dan Adam: da Neolithic, da tsawon 18-19 zamanai da na biyu da rabi na XX karni.

Kowane alƙaluma da juyin juya halin yayi dace a mika mulki ga wani sabon irin haifuwa. Wannan kimiyya-tushen fahimtar canza bulan halitta preconditions ga ci gaban da ka'idar sauyin. Babban maƙasudin nan shine bayanin da yanayin da canje-canje a tsarin da kuma jerin aiwatar da mace-mace, da takin gargajiya, halitta karuwa da yawan jama'a, kazalika da kima na dogon lokaci yayi.