Mammals: he manawa pōkole hōʻikeʻano

I ka lā, e manaoia mammals e ia i kekahi o ka loa holomua papa. Kēia pūʻulu Ua wehewehe aku ma ka helu o ka mea nui hiʻona. E like me nā koho o ka ikeia haʻawina i loko o ke ao nei i keia la, aole i oi aku mamua o elima tausani nā lālā o ka papa. ʻOiai ka mea, o kona waiwai 'ana i kumumanaʻo i keia huahelu ka loa He kokekau wale, no ka mea, i nā kānakaʻepekema, a e huli i hou? Ueo i ka lā.

Mammals a me kā lākou haawi aku

Mammals i manaoia e e he kūlana 'elele o? Aaoa. Ka mea, e haawi ma ka honua.

Me ka Poeikohoia o keia ano hiki ke loaʻa i loko o aneane pau loa ka nui habitats o ka Honua. Mau holoholona e nani mea ma ka wela, maloo wao akua aniau i loko o ka Highland wahi. Oe ke ike ia i loko o ka Polar wahi, a me ka Tropical rainforests. Ka mea, i mea mahaloia a hiki i loko o ka wai kaiapuni.

Paha i ka wahi wale i mea ole na kanaka] ma ka mammals mea maloko o ka mokuna o Antarctica a me ka hohonu hapa o ko ke ao nei i ka moana.

Interestingly, o ka wahi o ka puunaue ana o monotremes holoholona (e like, na platypus) ua maopopo iho la i kaupalena 'ia o nā panalāʻau e noho ana o New Guinea a me Australia. Marsupials ka poeikohoia haawi ma luna o ka mokupuni o Oceania, e like me ma ka Australia, a ma ka mokuna o ka 'Amelika. Kekahi hana hoihoi 'oiaio o ia ma luna o ka'Aukekulelia'āinapuniʻole i nohoiaʻi mua o ka hōʻeaʻana mai o ka noho mua ma ka wale kekahi mau placental mammals.

Mammals: i ka papa kuhikuhiE hiʻona o ka papa

E like me ua oleloia, keia pae ana o na holoholona i ka helu o nā kūlana 'ano, e hoike ana i ke kiʻekiʻe kiʻekiʻe o ka hui:

• Ua aneane viviparous mammals.
• Wahine suckle kā lākou mau keiki waiū hua mai la i ka mea i ho'ākāka 'glands (ma ke ala, ma muli o ia i kēia mea mammals kiʻi lākou mau inoa).
• Class 'elele i ka kekahi poo, e hana sebaceous a me ka hou glands.
• No ka mea no laila,-kapaia typical mammalian homeotherms, a mehana-koko - kā lākou kino ka mahana, aole ia e hilinaʻi ma ka olelo, a me ka Ambient mahana.
• A oi nui hiʻona o keia pae ana o na holoholona o ka luawai-ulu lolo, i loko o 'ana, i ka hapa hope o ia. Eia ka ka piko ma a na elele kamaʻilioʻana i e loa eiiieaena hana.
• Ma mammals i hana auricle, ka mea mawaho pepeiao Canal, e like me nā mea a pau ekolu o ka auditory ossicles, a, incidentally, e Hoʻololi 'mandible.
• No na hoa o ka papa e wehewehe aku e holomua eha-o ke keʻena o ka naʻau, a me ka hema aortic e pio, a i kaawale ana o ke koko ma luna o ka venous a me ka arterial (no ka laʻana, i ka mea kolo, a venous arterial koko ua hui i loko o ka naʻau).
• A kiʻiona hiʻona hiki ke noʻonoʻo, a me ka alveolar 'ole o ka mea ia maʻiʻaʻai.
• Eia kekahi, he mau oko i loko o ka 'ole o ke koko keena - ulaula koko keena o kēia mau holoholona mai i apo ia nuclei, he naehana pigment.
• Mammals i ehiku vertebrae i loko o ka cervical māhele 'āina.
• No ka lala o keia papa e wehewehe aku ma kekahi ano o ka niho (ke alo o incisors, canines, molars). Ma keia hihia Via niho aʻa bapetizo i loko o ka iwi ā iwi.

Ke kumu o mammals

ʻepekema,ʻo nā kūpuna o kēia mammals, he mau mea kolo iʻikeʻia i loko o ka Paleozoic. Mau holoholona nō, hoopaa mai la kekahi similarity me na amphibians, i loko o 'ana, i ka alo o ka ili glands, a hiki i ka papalua occipital condyle.

Ka oi aku o ka pau ana hoahanau o kēia ieaeiieoa?-E like? Ueo i manaoia. Me ka Poeikohoia o keia pae i wehewehe aku ma ke alo o kekahi niho (molars, incisors a me canines). Ka luna, a malalo ā i hui kūikawā iwi i Hawaiʻi i loko o mammalian auditory ossicles. Akā, 'elele o ka ieaeiieoa?-E like i mea ole ma ke keena Triassic.

Ua i loko o ka Canyon au, ua kaawale ana o ke ola-e hali ana i laha mai ia mau lala i i waiho hua.

I ka mea, maopopo formulate ka pähola 'ana o ke kumu o ka mammals mea hiki ole, no ka mea, a hiki i kēia lā, paleontologists a me nā kānakaʻepekema i' Imi noiʻi i loko o kēia wahi.