Ii-Elements okanye amalungu zingadibana (ngoku-reactha) ukuze zenze ii-pure compounds (ezifana namanzi, iityuwa, ii-oxides, kunye nee-organic compounds). Kwiimeko ezininzi, ezi compounds zine-fixed composition kwane-structure zazo nee- properties. Ii-properties ze-compound zingahluka kakhulu kwii-elements ezenziwe kuzo. I-Sodium y-imetal etshayo xa ithe yabekwa emanzini ane- chlorine iba yi-gas eyityhefu. xa zithe zadibana kwenzeka i-sodium chloride (ityuwa) into ke leyo engenabungozi kwaye yinto esenokusetyenziswa luluntu mhlawumbi ekutyeni.

Ukubanjwa kukaNontetha kwabacaphukisa abaxhasi bakhe. Ekuboniseni umanyano, amakhulu babaxhasi bakhe badibana, belungele ukuthetha nabasemagunyeni kwisiganeko sokubanjwa kweqhawekazi labo. Babesazi ngenxaki enokwenzeka ukuba angavela enkundleni yamatyala abasemagunyeni ngoko ke bamthumela esibhedlele sabagula ngengqonde eBhofolo [[8]] uNontetha kwaye ngo1924 bamtshintshela eWeskoppies asylum [[9]] ePitoli. Emva kweminyaka emibini ngo1926, kuthe cwaka ngokuba isiphuma sakhe sizakuthini abaxhasi bakhe bahamba 1600 mayile ukuyombona kodwababanjwa bagwetywa phantsi komthetho wedompass.

I-isiCastilian (Castellano) okanye IsiSpanish (español) lulwimi Romance kwiqela Ibero-Romance ukuba bavela iziyelelane eziliqela Latin oluthethwa emntla wombindi Iberia ehlabathini ngenkulungwane yesithoba. saa ngcembe nokwandiswa loBukumkani Castile (langoku kumntla Spain) ukuya kumbindi nakumzantsi saseIberia ngamaXesha Aphakathi.

Umphunga yi-organ ekuyo nayiphi na ii-vertebrate (izilwanyana ezinomnqonqo, okanye ithambo lomqolo). Ngumphunga onika igazi i-oxygen evela emoyeni, uze umke ne-carbon dioxide. Uninzi lwee-vertebrates lunemiphuna emi-2.

I-choanal atresia ingakrokrelwa xa kungenakufakelwa ithyubhu yempumloebizwa ngokuba yi-catheter yempumlo. Kwakhona, ukuba kubonakala ukunkcenkceza kwemifinya okuvela kwenye okanye kuzo zombini iimpumlo, oko kungaluphawu lwe- atresia. Olunye uphawu oluxhaphakileyo kukuvaleka kweempulo okubizwa ngokuba yi-cyanosis ebakwimveku xa incanciswa ngunina, njengoko xa ikule meko ukuphefumla kwayo kuxhomekeke kwiimpumlo. Olu phawu lungqinwa nge-radiological imaging, edla ngokwenziwa nge-CT scan.

Ifonetiki yafundwa ukusukela kwiinkulungwane yesithathu phambi kokuzalwa kukaKrestu(BC) kwilizwana lase-India, ngoshicilelo lukaPanini lwendawo nendlela yokuphinyiselwa kwamaqabane kwiSanskrit. Ialfabhethi ezinkulu eIndic namhlanje zihlela amaqabane azo ngokohlelo lukaPanini.

Amanani a-Irrational asoloko esenzeka kwi-geometry. Umzekelo, ukuba sine-square esinecala eliyimitha enye ngobude, umgama okwiikona engaphesheya kwenye okanye ekwelinye icala, kwi-square-root sezi kona zimbini, ezilingana no-1.414213 ... . Le ke linani eli-irrational. I-Mathematika iye yabonakalisa okokuba i-square root salo naliphi na inani eli-natural lisenokuba yi-integer okanye sibe linani eli-irrational.