Naturalcalamitiesisthatwhatbehappenedabnormalphenomena,naturalcalamitiessometimesarehorrifyinginNaturethathumanbeingisdependentontodamagebroughtaboutbyhumansociety.Inthemnowthathaveearthquake,volcaniceruption,mud-rockflow,seaquake,stagemanner,floodetc.todashforwardsendingoutthenaturedisaster;Alsohavesurfacesubsidence,landdesertification,arearid,coastlinechangewaitsforgradientdisasterappearinggraduallyinmorelongtimemiddleability;Stillhavetheenvironmentdisastersthatthehumanbeingactivityleadstosuchasozonospherechange,waterbodypollution,lossofsoilandwater,sourrain.Thesehavecomplicatedmutualconnectionbetweennaturalcalamitiesandenvironmentaldisruption.Occurrencethathumanbeingaskstoknowthesedisastersonthesignificancefromscience