写作：GRE作文ARGUMENT126篇真题九二
<p> ９２、<span word="It">It</span> <span word="is">is</span> <span word="known">known</span> <span word="that">that</span> <span word="in">in</span> <span word="recent">recent</span> <span word="years">years</span>, <span word="industrial">industrial</span> <span word="pollution">pollution</span> <span word="has">has</span> <span word="caused">caused</span> <span word="the">the</span> <span word="Earths">Earths</span> <span word="ozone">ozone</span> <span word="layer">layer</span> <span word="to">to</span> <span word="thin">thin</span>, <span word="allowing">allowing</span> <span word="an">an</span> <span word="increase">increase</span> <span word="in">in</span> <span word="the">the</span> <span word="amount">amount</span> <span word="of">of</span> <span word="ultraviolet">ultraviolet</span> <span word="radiation">radiation</span> <span word="that">that</span> <span word="reaches">reaches</span> <span word="the">the</span> <span word="Earths">Earths</span> <span word="surface">surface</span>. <span word="At">At</span> <span word="the">the</span> <span word="same">same</span> <span word="time">time</span>, <span word="scientists">scientists</span> <span word="have">have</span> <span word="discovered">discovered</span>, <span word="the">the</span> <span word="population">population</span> <span word="of">of</span> <span word="a">a</span> <span word="species">species</span> <span word="of">of</span> <span word="salamander">salamander</span> <span word="that">that</span> <span word="lays">lays</span> <span word="its">its</span> <span word="eggs">eggs</span> <span word="in">in</span> <span word="mountain">mountain</span> <span word="lakes">lakes</span> <span word="has">has</span> <span word="declined">declined</span>. <span word="Since">Since</span> <span word="ultraviolet">ultraviolet</span> <span word="radiation">radiation</span> <span word="is">is</span> <span word="known">known</span> <span word="to">to</span> <span word="be">be</span> <span word="damaging">damaging</span> <span word="to">to</span> <span word="delicate">delicate</span> <span word="tissues">tissues</span> <span word="and">and</span> <span word="since">since</span> <span word="salamander">salamander</span> <span word="eggs">eggs</span> <span word="have">have</span> <span word="no">no</span> <span word="protective">protective</span> <span word="shells">shells</span>, <span word="it">it</span> <span word="must">must</span> <span word="be">be</span> <span word="the">the</span> <span word="case">case</span> <span word="that">that</span> <span word="the">the</span> <span word="increase">increase</span> <span word="in">in</span> <span word="ultraviolet">ultraviolet</span> <span word="radiation">radiation</span> <span word="has">has</span> <span word="damaged">damaged</span> <span word="many">many</span> <span word="salamander">salamander</span> <span word="eggs">eggs</span> <span word="and">and</span> <span word="prevented">prevented</span> <span word="them">them</span> <span word="from">from</span> <span word="hatching">hatching</span>. <span word="This">This</span> <span word="process">process</span> <span word="will">will</span> <span word="no">no</span> <span word="doubt">doubt</span> <span word="cause">cause</span> <span word="population">population</span> <span word="declines">declines</span> <span word="in">in</span> <span word="other">other</span> <span word="species">species</span>, <span word="just">just</span> <span word="as">as</span> <span word="it">it</span> <span word="has">has</span> <span word="in">in</span> <span word="the">the</span> <span word="salamander">salamander</span> <span word="species">species</span>.</p><p> </p>
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