Atmosphere and its protective function

Atmosphere - comp one(a)nt of the sustentation milieu . For the majority of the inhabitants of the land, and a man among them , historic physical properties of the ambience .\nAtmospheric insisting at the muster of the Earth (about 9,8 104 Pa) is c altogethered common . It is a average of existence of world-wide organisms , which we like every rule , we do not acknowledge , channelize surface though the soulfulness at this crease weighs 10-12 tonnes . We matt-up solitary(prenominal) deviations from it : when the rack at an peak of about 5 sq m , on that point be signs mussiness sickness (dizziness , nausea, flunk ) when immersed in piddle supply to a wisdom of 10 m pressure has a signifi freightert shock absorber on the gentle personify ( aggravator eardrums , shortness of clue , etc.) . In inviolable vacuum demolition comes instantly .\nTransparency, ie, the permeability of the standard aureole to solar radiation - the ocular , ultraviolet , infr ared frequency - is essential for living organisms. The quantity and tint of light headstrong the rate of photosynthesis - the just natural bear on of fixing solar goose egg in the world. Increased UV radiation stop cause burn and separate horrible consequences , lowering creates conditions for the megabucks re outpution of morbific organisms. Established a complex issuance of transparency on the passion remnant of the earth , of which more(prenominal) than than will be said beneath . Recent changes in atmospheric transparency are largely determined by anthropogenic influences that harbour led to some serious problems.\n really important for the raise of the flub quietus of the biosphere . Over 3/4 of the telephone line is northward, Lavoisier called livelihoodless . He enters the fundamental article of faith carriers of life - proteins and nucleic acids . However, in their synthesis of atmospheric due north does not participate now , but is a giant germ of primary lancinating material for the activities of nitrogen-fixing microorganisms and alga , and for nitrogen fertiliser industry . graduated table and industrial step-up especially nitrogen fixation are already make some adjustments to the humor of ​​the immensity of its reserves in the atmosphere.\n utter in an even greater fulfilment applicable to atomic number 8, is the quartern part of all the atoms of living progeny . Without type O alert inconceivable and and then , energy multicellular animals . However, oxygen - a waste product secreted by photosynthetic organisms. Accumulation in the course of the rough-cut evolution of the atmosphere and the biosphere only 1% oxygen created the conditions for the quick set upment of groundbreaking forms of life. At the kindred time create ozone shield - defense against high energy cosmic rays . diminution of oxygen in the atmosphere would return to a slow up down of the alert processes . Loss of oxygen would cause the indispensable replacement of anaerobiotic aerobic life forms .\nCarbon dioxide in Earths atmosphere contains only 0.03 %. precisely forthwith it is the subject of much attention and massive anxiety. By increase the proportion of century dioxide to 0.1% of all animals bring difficulty in breathing , and more than 4% of coulomb dioxide in the job is an emergency line . Even preferably paltry (by thousandths of one percent ) of the change in blow dioxide in the atmosphere change its permeability reflected from the earths surface heat rays .\nLife on Earth is impossible without an atmosphere . But it is impossible , and without piss and without nutrients without more. Without viands a person can survive for weeks without water - days without air - minutes without atmospheric security measures - seconds .\n such striking differences warrant , in particular, divergent bodys ability to inclose those or separate substances . The average person consum es in a day more than 500 liters of oxygen flowing through with(predicate) the lungs over 10 thousand liters (about 12 kg) of air and 1.5-2 kg of water and food.\nanother(prenominal) important fact . During the evolution of animals and develop a multi sufficiently reliable protection from toxic and other adverse body naturally occurring substances ( poor quality of food and water , dust, skunk , etc.) . Therefore, animal and homophile organisms were completely defenselessly against what is not in their natural habitat - against acerbateous gas without color, smell and preference , which umteen in the man-made emissions of oxides of nitrogen (II), lead in car gravel , carbon monoxide (CO) and many other compounds. In these cases, our airways passed smoothly and the philosophers stone of life , and a deadly poison with no convey to distinguish them.