A catastrophic halakar da lemar sararin samaniya Layer

Mun duk zauna a cikin duniya a cikin haskoki dumi rana, amma idan duk muka sani game da sakamakon wadannan haskoki a kan jikin mutum?

All rayuwa a duniya ya dogara da makamashi na rana. Wannan ultraviolet da infrared haskoki su ne tushen wannan daraja makamashi. Duk da haka, da tasiri na ultraviolet radiation a kan halittu sau da yawa take kaiwa zuwa makawa rushewa daga cikin tsarin da nucleic acid da sunadaran ba, kuma a sakamakon, take kaiwa zuwa tantanin halitta mutuwa.

Nature halitta shi mai dogara da kariya - lemar sararin samaniya Layer na Duniya, wanda hidima a matsayin wani shãmaki zuwa cutarwa UV haskoki. A cikin iska, a tsawon 20-50 km shi ya ƙunshi babban adadin lemar sararin samaniya, wanda halitta wani irin garkuwa da cewa kare biosphere da kuma bil'adama.

A jikin mutum ne iya kare kanta a kudi na kira na da duhu pigment (melanin), wanda muke kira ba kawai a matsayin tan. Amma a lokaci guda a cikin bazara, lokacin da fata ƙunshi kananan adadin melanin, wani mutum ba zai iya zama na dogon lokaci a cikin rana: The fata zai iya redden da sauri, kuma a cikin 'yan sa'o'i iya tashi overall jiki zafin jiki da kuma ciwon kai faruwa.

Kowa da kowa ya dade da aka sani da cewa masana kimiyya da tsayar da tsanaki halakar da lemar sararin samaniya Layer. A lemar sararin samaniya abun ciki na yanayi ne da yawa rage, haka ma, an samu abin da ake kira "rami", wanda aka located a kan Antarctica. Abin baƙin ciki, yankin da wannan rami na karuwa a kowace shekara, kuma a wannan lokacin ta yankin ya wuce girman da Antarctica da kanta.

Depletion na lemar sararin samaniya Layer ba ya wuce kada a gane shi da mutane, alal misali, a kasashen da suke a kusa da kusanci zuwa ɓangaren duniya, akwai wani girma cutar. M shi cututtuka hade tare da ƙara UV bango, kamar cataracts, fata ciwon daji, da sauransu.

Masana kimiyya daga arewacin yammancin duniya kuma lura akan rage lemar sararin samaniya a cikin yanayi da kuma bayar da rahoton abin da ya faru na lemar sararin samaniya "rami" a kan Svalbard.

Abin da ya razana halakar da lemar sararin samaniya Layer? A sakamakon zai iya zama yankunan da, musamman, wannan da aka nuna a cikin girbi, wanda aka fi mayar rage. Bugu da ari, akwai maye gurbi na shuke-shuke, da dabbobi, kazalika da ci gaban da cututtuka. Ban tsoro su yi tunanin cewa lemar sararin samaniya Layer iya bace gaba ɗaya, saboda shi babu makawa zai iya kai ga asarar Flora da fauna.

Babban Sanadin halakar da lemar sararin samaniya Layer aka boye a ayyukan mutane. A wani kokarin tabbatar da su dadi zama, mutum halittawa ne, kuma yana amfani da wani iri-iri na masana'antu tafiyar matakai. Daban-daban aerosol sprays dake dauke da freons (chlorofluoromethane), suna hadari ga mutane, amma shi da aka adana a cikin yanayi fiye da shekaru 70.

A gaskiya cewa abu accumulates a cikin yanayi, wanda kai ga halakar lemar sararin samaniya. The aiki na sinadaran masana'antu ne sosai moriya ga iska ingress daga cikin wadannan abubuwa. Na farko, da lemar sararin samaniya Layer ãr auku a ƙarƙashin rinjayar chlorine, daya zarra na wanda decomposes 100 tysyach lemar sararin samaniya kwayoyin.

Yana taimaka wa halakar wa "garkuwa" da kuma ayyukan sojojin. Engines ballistic makamai masu linzami da amfani da sojoji, emit babbar adadin cutarwa nitrogen oxides. Kowane daya irin wannan makami mai linzami jefa cikin sarari Forms wata babbar "rami" a cikin lemar sararin samaniya Layer. Bayan kawai 'yan sa'o'i, wannan "rami" an jinkirta.

Back a 70s a kan m da kuma inda ba wanda yake zaune tsibirin na Amurka soja tarwatsa a cikin stratosphere sinadarai da gudummawar da samuwar "ramuka" da cewa dade kawai bayan sa'o'i da dama. Depletion na lemar sararin samaniya Layer a kan tsibirin ya kai ga cewa da yawa daga cikin ƙasar mazaunan tsibirin da aka kawai hallaka. Animals, shuke-shuke, micro-kwayoyin - duk ya mutu. Mun yi iya tsira kawai 'yan manyan kunkuru da aka ajiye saboda da m fitar kasusuwan jikinsu makamai. Duk da haka, wadannan kunkuru ne makafi, saboda akan tantanin ido aka ƙone da riskar hasken ultraviolet.