Skip to main content

Wanasayansi Wagundua Bara lingine lililofichika

Scientists just discovered a whole lot more about the once-hidden continent Zealandia

Scientists recently gathered more clues into the history of Earth’s seventh continent,Zealandia. The mostly submerged continent was hiding in plain sight until a new study backed up its existence this year. Now, after drilling expeditions, researchers think the landmass was once closer to land level, allowing animals andplants to move across continents.

Researchers embarked on a two-month-long expedition to Zealandia in one of the first extensive surveys of the area, according to The Guardian. They recently shared discoveries like fossils and signs of tectonic movements. Stephen Pekar, a researcher aboard the JOIDES Resolutionresearch vessel, said in an August posttheir drilling allowed them to “say something completely new that basically has improved and in many cases has rewritten our understanding of the tectonic history of Zealandia.”

Researchers collected sediment cores by drilling in six locations in Zealandia, finding information of change over millions of years. Gerald Dickens, professor at Rice University, said, “The discovery of microscopic shells of organisms that lived in warm shallow seas, and spores and pollen from land plants, reveal that the geography and climate of Zealandia was dramatically different in the past.”

Zealandia is around 1.9 million square miles, and researchers think it might have separated from Australia and Antarctica 80 million years ago. The idea that Zealandia could once have been closer to land level might offer an answer to another question scientists have puzzled over: how plants and animals dispersed in the South Pacific. Rupert Sutherland, professor at Victoria University, said, “The discovery of past land and shallow seas now provides an explanation: there were pathways for animals and plants to move along.”

Researchers will keep scrutinizing the sediment cores for information on climate change and Zealandia’s past.

Report a problem.

Labels:

Comments

Post a Comment

Popular posts from this blog

DAWA YA ASILI NA USAFI KWA WANAWAKE NI MUHIMU

Dawa ya Uchafu Ukeni Kwa kawaida mwanamke hutokwa na majimaji mepesi (vaginal fluids) yenye rangi nyeupe au ya njano. Inapotokea anatokwa na majimaji yenye ute mzito wenye rangi nyeupe au kahawia na yanatoa harufu kali na muwasho, hiyo huwa ni ishara ya ugonjwa uitwao wa kutokwa uchafu ukeni ujulikanao kwa kitaalamu kama ‘Vaginosis’. Mwanamke mwenye tatizo hili hujisikia vibaya na anaweza akaacha kushiriki tendo la ndoa ama kwa kuhofia maumivu au kwa kuona aibu kwani mwanaume ni vigumu kuvumilia harufu hiyo au hata kuuona tu huo ute ute kwani humjengea hisia kwamba mwenza wake atakuwa na magonjwa ya zinaa au si mwaminifu kwa ujumla. Kinachosababisha kutokwa na uchafu ukeni: • Kuwa na wapenzi wengi • Baadhi ya dawa za uzazi wa mpango • Kusafisha uke kwa kutumia dawa zenye kemikali • Uchafu • Uvutaji sigara • Pombe • Maambukizi ya Bakteria au bakteria wabaya wanapozidi ukeni Dalili: • Kutokwa na uchafu us...
Post a Comment
Read more

FAIDA ZA MAZIWA YA SOYA MWILINI

DONDOO ZA AFYA........!!!! MAAJABU YA SOYA MWILINI. MAAJABU YA SOYA MWILINI. Soya ni zao la jamii ya mikunde lenye aina nyingi za matumizi; ni zao linalofaa kwa chakula cha binadamu na wanyama na pia ni zao la biashara. Zao hilo lina kiasi kingi cha protini yenye ubora wa hali ya juu kuliko kiasi kilichopo katika aina nyingine ya mazao ya mimea.ZK  taasisi inayojishughuliza na uzalishaji wa bidhaa za vyakula lishe na mimea na matunda, vinavyoweza kutiba magonjwa mbalimbali wamezalisha maziwa ya Soya ambayo yana  kiasi cha protini inayozidi hata kiasi cha protini katika nyama, mayai na maziwa. Hii inamaanisha kuwa maziwa ya soya ni chanzo rahisi na cha bei nafuu cha protini hasa kwa watu wenye kipato kidogo ambao hawawezi kumudu gharama za vyanzo vingine vya protini kama nyama, maziwa na samaki. Aidha, maziwa ya soya yanaa mafuta bora yasiyo kuwa na lehemu (cholesterol). Uwingi na ubora wa protini katika maziwa ya soya yanaweza kuondoa utapiamlo hususani kwa watoto na kuwao...
Post a Comment
Read more

FAIDA 30 ZA ALOE VERA MWILINI

FAIDA ZA MMEA WA ALOE VERA (Mshubiri): Mshubiri ni mti wenye Miujiza ya kutibu maradhi sugu kama ugonjwa wa Saratani (Cancer) ugonjwa wa Kisukari Diabetis, Ugonjwa wa cholesterol, ugonjwa wa kuvimba sehemu ya mwili na magonjwa mengine mengi. Tuone faida za mmea wa aloe vera au mshubiri 1. Huondoa uvimbe katika jicho Weka kiasi kidogo cha majimaji ya mu-aloe vera freshi kisha kuamka asubuhi, acha kwa dakika kadhaa kisha jisafishe. Uvimbe lazima ukimbie. Pia unaweza kuloweka pamba katika majimaji ya mualoe vera na kisha jisafishe katika jicho lenye uvimbe. 2. Huzuia na kuondoa michirizi ya tumbo itokanayo na ujauzito Anza kwa kupakaa majimaji ya mualoevera juu ya tumbo lako na ufanye kama masaji hivi taratibu juu ya tumbo mara 2 kwa siku katika kipindi chote cha ujauzito na baada ya kujifungua kwa miezi michache mpaka michirizi ipotee yote. 3. Hutibu bawasiri Ile ile sifa moja iliyonayo ya kutibu uvimbe ambayo inaweza pia kutibu malengelenge na uvimbeuchungu kwenye mwako wa mwili...
Post a Comment
Read more