点梗在这里

    请在这章里悄悄话点梗～有空会写哒

    慢慢写点

    我吃吃吃此处吃吃吃

    ————剩下都是凑字——————

    Theatmosphereisohecrucialpartsoftheenviro.ItisayerofgasesthatsurroundstheEarth，mainlyposedofnitrogenabout78％，oxygenabout21％，andsmallamountsofasessuchascarbondioxide，argon，andtraceamountsofneon，helium，ahaheatmosphereprotectsusfromharmfulsorradiatiutestheEarth，stemperature，andprovidestheairwebreathe.Forexample，theozohiratospherepysavitalroleinabsmostoftheSun，sultravioletradiation，whichcauseskindotherhealthproblemsifitreachestheEarth，ssurfargeamounts.

    Thehydrosphereincludesallthewateroh，ssurface，suchasos，seas，kes，riv