[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:06.84,0:00:07.90,Default,,0000,0000,0000,,Na našoj planeti
Dialogue: 0,0:00:07.90,0:00:09.61,Default,,0000,0000,0000,,imamo dve polarne oblasti:
Dialogue: 0,0:00:09.61,0:00:11.37,Default,,0000,0000,0000,,Arktik, čije ime dolazi
Dialogue: 0,0:00:11.37,0:00:13.49,Default,,0000,0000,0000,,od grčke reči "arktikos" - severni,
Dialogue: 0,0:00:13.49,0:00:14.80,Default,,0000,0000,0000,,i Antarktik
Dialogue: 0,0:00:14.80,0:00:16.16,Default,,0000,0000,0000,,od "antarktikos" -
Dialogue: 0,0:00:16.16,0:00:17.73,Default,,0000,0000,0000,,suprotno od severnog.
Dialogue: 0,0:00:17.73,0:00:19.98,Default,,0000,0000,0000,,Ali postoji lakši način da se zapamte,
Dialogue: 0,0:00:19.98,0:00:22.08,Default,,0000,0000,0000,,ako se samo setite šta ih okružuje.
Dialogue: 0,0:00:22.08,0:00:25.75,Default,,0000,0000,0000,,Arktik, smešten na\Nsevernoj hemisferi naše planete
Dialogue: 0,0:00:25.75,0:00:29.00,Default,,0000,0000,0000,,je okean, ceo okružen kopnom.
Dialogue: 0,0:00:29.00,0:00:30.55,Default,,0000,0000,0000,,Na drugoj strani sveta,
Dialogue: 0,0:00:30.55,0:00:32.22,Default,,0000,0000,0000,,Antarktik je kontinent,
Dialogue: 0,0:00:32.22,0:00:34.76,Default,,0000,0000,0000,,ceo okružen okeanom.
Dialogue: 0,0:00:34.76,0:00:37.73,Default,,0000,0000,0000,,Arktik ima polarne medvede,\Nali nema pingvine,
Dialogue: 0,0:00:37.73,0:00:40.71,Default,,0000,0000,0000,,a Antarktik ima pingvine,\Nali nema polarne medvede.
Dialogue: 0,0:00:41.36,0:00:43.55,Default,,0000,0000,0000,,Hajde prvo da pričamo o Arktiku.
Dialogue: 0,0:00:43.55,0:00:45.96,Default,,0000,0000,0000,,Arktička oblast se sastoji\Nod ogromnog okeana
Dialogue: 0,0:00:45.96,0:00:47.88,Default,,0000,0000,0000,,prekrivenog ledom
Dialogue: 0,0:00:47.88,0:00:49.63,Default,,0000,0000,0000,,i okruženom permafrostom bez drveća.
Dialogue: 0,0:00:49.63,0:00:51.19,Default,,0000,0000,0000,,Ova oblast može da se definiše
Dialogue: 0,0:00:51.19,0:00:53.13,Default,,0000,0000,0000,,kao oblast između arktičkog kruga
Dialogue: 0,0:00:53.13,0:00:54.52,Default,,0000,0000,0000,,i Severnog pola.
Dialogue: 0,0:00:54.52,0:00:56.22,Default,,0000,0000,0000,,Ako biste stajali na Severnom polu,
Dialogue: 0,0:00:56.22,0:00:58.84,Default,,0000,0000,0000,,u svim pravcima gde biste pogledali
Dialogue: 0,0:00:58.84,0:00:59.96,Default,,0000,0000,0000,,bio bi jug.
Dialogue: 0,0:00:59.96,0:01:01.32,Default,,0000,0000,0000,,Ali teško je stajati dugo
Dialogue: 0,0:01:01.32,0:01:03.26,Default,,0000,0000,0000,,na Severnom polu
Dialogue: 0,0:01:03.26,0:01:05.40,Default,,0000,0000,0000,,jer se on nalazi nasred okeana
Dialogue: 0,0:01:05.40,0:01:08.42,Default,,0000,0000,0000,,prekrivenog ledom koji se stalno pomera.
Dialogue: 0,0:01:08.42,0:01:11.17,Default,,0000,0000,0000,,Ako biste upali u vodu na Severnom polu,
Dialogue: 0,0:01:11.17,0:01:15.63,Default,,0000,0000,0000,,upali biste u vodu dubine 4.260 metara.
Dialogue: 0,0:01:15.63,0:01:18.17,Default,,0000,0000,0000,,Iznad vode, prosečne zimske temperature
Dialogue: 0,0:01:18.17,0:01:21.59,Default,,0000,0000,0000,,mogu biti do minus 40°C,
Dialogue: 0,0:01:21.59,0:01:23.35,Default,,0000,0000,0000,,a najniža zabeležena temperatura
Dialogue: 0,0:01:23.35,0:01:27.55,Default,,0000,0000,0000,,je oko minus 68°C.
Dialogue: 0,0:01:27.55,0:01:29.26,Default,,0000,0000,0000,,Uprkos ovim surovim uslovima,
Dialogue: 0,0:01:29.26,0:01:31.58,Default,,0000,0000,0000,,ljudi su naseljavali oblasti na Arktiku
Dialogue: 0,0:01:31.58,0:01:33.80,Default,,0000,0000,0000,,hiljadama godina.
Dialogue: 0,0:01:33.80,0:01:37.48,Default,,0000,0000,0000,,U život na Arktiku spadaju i\Norganizmi koji žive u ledu,
Dialogue: 0,0:01:37.48,0:01:39.46,Default,,0000,0000,0000,,zooplankton i fitoplankton,
Dialogue: 0,0:01:39.46,0:01:41.04,Default,,0000,0000,0000,,ribe i morski sisari,
Dialogue: 0,0:01:41.04,0:01:41.73,Default,,0000,0000,0000,,ptice,
Dialogue: 0,0:01:41.73,0:01:42.60,Default,,0000,0000,0000,,kopnene životinje,
Dialogue: 0,0:01:42.60,0:01:42.98,Default,,0000,0000,0000,,biljke
Dialogue: 0,0:01:42.98,0:01:45.08,Default,,0000,0000,0000,,i ljudska društva.
Dialogue: 0,0:01:45.08,0:01:47.18,Default,,0000,0000,0000,,Dobro, a Antarktik?
Dialogue: 0,0:01:47.18,0:01:50.22,Default,,0000,0000,0000,,Antarktik je najjužniji kontinent
Dialogue: 0,0:01:50.22,0:01:52.88,Default,,0000,0000,0000,,na kome se nalazi geografski Južni pol.
Dialogue: 0,0:01:52.88,0:01:55.59,Default,,0000,0000,0000,,To je peti najveći kontinent na planeti,
Dialogue: 0,0:01:55.59,0:01:57.84,Default,,0000,0000,0000,,skoro dvaput veći od Australije.
Dialogue: 0,0:01:57.84,0:02:01.34,Default,,0000,0000,0000,,Skoro 98% Antarktika je prekriveno ledom
Dialogue: 0,0:02:01.34,0:02:03.78,Default,,0000,0000,0000,,debljine najmanje 1,5km.
Dialogue: 0,0:02:03.78,0:02:06.86,Default,,0000,0000,0000,,Uslovi na Antarktiku su\Nmeđu najekstremnijim
Dialogue: 0,0:02:06.86,0:02:08.30,Default,,0000,0000,0000,,u celom svetu.
Dialogue: 0,0:02:08.30,0:02:10.16,Default,,0000,0000,0000,,U proseku, to je najhladniji,
Dialogue: 0,0:02:10.16,0:02:10.97,Default,,0000,0000,0000,,najvetrovitiji,
Dialogue: 0,0:02:10.97,0:02:12.28,Default,,0000,0000,0000,,najsuvlji kontinent
Dialogue: 0,0:02:12.28,0:02:14.18,Default,,0000,0000,0000,,i ima najveću prosečnu nadmorsku visinu
Dialogue: 0,0:02:14.18,0:02:15.72,Default,,0000,0000,0000,,od svih kontinenata.
Dialogue: 0,0:02:15.72,0:02:18.69,Default,,0000,0000,0000,,Možda mislite da\Nstalno pada sneg na Polovima,
Dialogue: 0,0:02:18.69,0:02:20.53,Default,,0000,0000,0000,,ali Antarktik je tako suv
Dialogue: 0,0:02:20.53,0:02:21.100,Default,,0000,0000,0000,,da se smatra pustinjom
Dialogue: 0,0:02:21.100,0:02:23.11,Default,,0000,0000,0000,,sa godišnjim padavinama
Dialogue: 0,0:02:23.11,0:02:26.25,Default,,0000,0000,0000,,od samo 200mm duž obale,
Dialogue: 0,0:02:26.25,0:02:27.61,Default,,0000,0000,0000,,a još manje u unutrašnjosti.
Dialogue: 0,0:02:27.61,0:02:29.16,Default,,0000,0000,0000,,Temperatura na Antarktiku
Dialogue: 0,0:02:29.16,0:02:32.56,Default,,0000,0000,0000,,dostiže minus 89°C.
Dialogue: 0,0:02:32.56,0:02:34.100,Default,,0000,0000,0000,,Zbog toga što je tako surov\Ni teško pristupačan,
Dialogue: 0,0:02:34.100,0:02:37.97,Default,,0000,0000,0000,,nema stalnih ljudskih\Nnaselja na Antarktiku,
Dialogue: 0,0:02:37.97,0:02:40.50,Default,,0000,0000,0000,,ali 1.000 do 5.000 ljudi
Dialogue: 0,0:02:40.50,0:02:41.75,Default,,0000,0000,0000,,boravi tokom godine
Dialogue: 0,0:02:41.75,0:02:44.92,Default,,0000,0000,0000,,na istraživačkim stanicama\Nširom kontinenta.
Dialogue: 0,0:02:44.92,0:02:48.30,Default,,0000,0000,0000,,Čak i najekstremnije životinje\Nbore se za opstanak
Dialogue: 0,0:02:48.30,0:02:51.10,Default,,0000,0000,0000,,i samo organizmi adaptirani na hladnoću\Nmogu da opstanu,
Dialogue: 0,0:02:51.10,0:02:53.09,Default,,0000,0000,0000,,uključujući mnoge vrste algi,
Dialogue: 0,0:02:53.09,0:02:54.24,Default,,0000,0000,0000,,životinja,
Dialogue: 0,0:02:54.24,0:02:55.33,Default,,0000,0000,0000,,bakterija,
Dialogue: 0,0:02:55.33,0:02:56.29,Default,,0000,0000,0000,,gljiva,
Dialogue: 0,0:02:56.29,0:02:57.11,Default,,0000,0000,0000,,biljaka
Dialogue: 0,0:02:57.11,0:02:58.08,Default,,0000,0000,0000,,i protista.
Dialogue: 0,0:02:59.51,0:03:02.85,Default,,0000,0000,0000,,Ali zašto je Antarktik hladniji\Nod svog severnog rođaka?
Dialogue: 0,0:03:02.85,0:03:04.47,Default,,0000,0000,0000,,Prvo, većina kontinenta je
Dialogue: 0,0:03:04.47,0:03:07.08,Default,,0000,0000,0000,,na više od 3km iznad nivoa mora,
Dialogue: 0,0:03:07.08,0:03:09.43,Default,,0000,0000,0000,,a temperatura opada\Nsa nadmorskom visinom.
Dialogue: 0,0:03:09.43,0:03:12.06,Default,,0000,0000,0000,,Zato na planinskim vrhovima ima snega.
Dialogue: 0,0:03:12.06,0:03:13.85,Default,,0000,0000,0000,,Drugo, setite se da je Arktik
Dialogue: 0,0:03:13.85,0:03:16.31,Default,,0000,0000,0000,,u stvari smrznuti okean.
Dialogue: 0,0:03:16.31,0:03:17.85,Default,,0000,0000,0000,,Voda u okeanu ispod njega
Dialogue: 0,0:03:17.85,0:03:20.82,Default,,0000,0000,0000,,je toplija nego\Nsmrznuto tlo na Antarktiku
Dialogue: 0,0:03:20.82,0:03:23.66,Default,,0000,0000,0000,,i ta toplota se prenosi kroz led.
Dialogue: 0,0:03:23.66,0:03:26.07,Default,,0000,0000,0000,,To sprečava da temperature\Nu arktičkim oblastima
Dialogue: 0,0:03:26.07,0:03:27.49,Default,,0000,0000,0000,,dostignu ekstremne vrednosti
Dialogue: 0,0:03:27.49,0:03:30.69,Default,,0000,0000,0000,,tipične za tlo na Antarktiku.
Dialogue: 0,0:03:30.69,0:03:34.57,Default,,0000,0000,0000,,Treće, godišnja doba su se\Nurotila protiv Antarktika.
Dialogue: 0,0:03:34.57,0:03:36.62,Default,,0000,0000,0000,,Tokom afela, u julu,
Dialogue: 0,0:03:36.62,0:03:38.74,Default,,0000,0000,0000,,kad je Zemlja najudaljenija od Sunca,
Dialogue: 0,0:03:38.74,0:03:41.55,Default,,0000,0000,0000,,na Antarktiku je takođe zima,
Dialogue: 0,0:03:41.55,0:03:43.45,Default,,0000,0000,0000,,što stvara dvostruko\Nprokletstvo hladnoće
Dialogue: 0,0:03:43.45,0:03:44.75,Default,,0000,0000,0000,,za južni pol.
Dialogue: 0,0:03:44.75,0:03:46.91,Default,,0000,0000,0000,,Ali, uprkos negostoljubivosti,
Dialogue: 0,0:03:46.91,0:03:49.33,Default,,0000,0000,0000,,severni i južni pol su veliki razlog
Dialogue: 0,0:03:49.33,0:03:51.43,Default,,0000,0000,0000,,zašto je naša planeta takva kakva je.
Dialogue: 0,0:03:51.43,0:03:52.94,Default,,0000,0000,0000,,Obe naše polarne oblasti
Dialogue: 0,0:03:52.94,0:03:55.16,Default,,0000,0000,0000,,su veoma važni kontrolori klime.
Dialogue: 0,0:03:55.16,0:03:56.89,Default,,0000,0000,0000,,Oni pomažu ujednačavanju temperature
Dialogue: 0,0:03:56.89,0:03:58.65,Default,,0000,0000,0000,,u našim umerenim zonama
Dialogue: 0,0:03:58.65,0:04:00.35,Default,,0000,0000,0000,,i daju nam stabilno vreme.
Dialogue: 0,0:04:00.35,0:04:02.32,Default,,0000,0000,0000,,Kako morski led na Arktiku opada
Dialogue: 0,0:04:02.32,0:04:04.56,Default,,0000,0000,0000,,zbog klimatskih promena\Ni globalnog zagrevanja,
Dialogue: 0,0:04:04.56,0:04:05.91,Default,,0000,0000,0000,,vreme širom planete
Dialogue: 0,0:04:05.91,0:04:08.23,Default,,0000,0000,0000,,postaje sve nestabilnije.