保护自然资源
<p><span word="Through">Through</span> <span word="the">the</span> <span word="changes">changes</span>＇<span word="in">in</span> <span word="the">the</span> <span word="ways">ways</span> <span word="Of">Of</span> <span word="making">making</span> <span word="a">a</span> <span word="living">living</span> <span word="in">in</span> <span word="a">a</span> <span word="family">family</span> <span word="over">over</span> <span word="several">several</span> <span word="gen">gen</span>，<span word="erations">erations</span>， <span word="man">man</span> <span word="has">has</span> <span word="been">been</span> <span word="warned">warned</span> <span word="against">against</span> <span word="waste">waste</span> <span word="of">of</span> <span word="natural">natural</span> <span word="resources">resources</span> <span word="and">and</span> <span word="emphasizing">emphasizing</span> <span word="the">the</span> <span word="urgent">urgent</span> <span word="need">need</span> <span word="to">to</span> <span word="preserve">preserve</span> <span word="these">these</span> <span word="resources">resources</span>。</p><p><span word="Ever">Ever</span> <span word="since">since</span> <span word="man">man</span> <span word="appeared">appeared</span> <span word="on">on</span> <span word="the">the</span> <span word="earth">earth</span>， <span word="man">man</span>＇<span word="s">s</span> <span word="survival">survival</span> <span word="has">has</span> <span word="been">been</span> <span word="heavily">heavily</span> <span word="relied">relied</span> <span word="on">on</span> <span word="nature">nature</span>。 <span word="Almost">Almost</span> <span word="everything">everything</span> <span word="we">we</span> <span word="use">use</span> <span word="in">in</span> <span word="our">our</span> <span word="everyday">everyday</span> <span word="life">life</span> <span word="comes">comes</span> <span word="fromm">fromm</span>＇<span word="notate">notate</span>， <span word="ranging">ranging</span> <span word="from">from</span> <span word="the">the</span> <span word="food">food</span> <span word="we">we</span> <span word="eat">eat</span>， <span word="the">the</span> <span word="water">water</span> <span word="we">we</span> <span word="drink">drink</span>， <span word="to">to</span> <span word="the">the</span> <span word="wood">wood</span> <span word="which">which</span> <span word="is">is</span> <span word="tm">tm</span>＇<span word="ned">ned</span> <span word="into">into</span> <span word="furniture">furniture</span>。<span word="With">With</span> <span word="the">the</span> <span word="development">development</span> <span word="of">of</span> <span word="technology">technology</span> <span word="and">and</span> <span word="population">population</span> <span word="growth">growth</span>， <span word="the">the</span> <span word="amount">amount</span> <span word="and">and</span> <span word="range">range</span> <span word="of">of</span> <span word="materials">materials</span> <span word="used">used</span> <span word="has">has</span> <span word="increased">increased</span> <span word="at">at</span> <span word="an">an</span> <span word="alarming">alarming</span> <span word="rate">rate</span>。<span word="However">However</span>， <span word="natural">natural</span> <span word="resources">resources</span> <span word="are">are</span> <span word="not">not</span> <span word="inexhaustible">inexhaustible</span>。 <span word="Some">Some</span> <span word="reserves">reserves</span> <span word="are">are</span> <span word="already">already</span> <span word="on">on</span> <span word="the">the</span> <span word="brink">brink</span> <span word="of">of</span> <span word="exhaustion">exhaustion</span> <span word="and">and</span> <span word="there">there</span> <span word="is">is</span> <span word="no">no</span> <span word="hope">hope</span> <span word="of">of</span> <span word="replacing">replacing</span> <span word="them">them</span>。 <span word="The">The</span> <span word="widespread">widespread</span> <span word="water">water</span> <span word="shortage">shortage</span> <span word="is">is</span> <span word="an">an</span> <span word="example">example</span> <span word="in">in</span> <span word="point">point</span>。 <span word="If">If</span> <span word="man">man</span> <span word="continued">continued</span> <span word="to">to</span> <span word="squander">squander</span> <span word="natural">natural</span> <span word="resources">resources</span> <span word="with">with</span> <span word="no">no</span> <span word="thought">thought</span> <span word="for">for</span> <span word="the">the</span> <span word="future">future</span>， <span word="the">the</span> <span word="later">later</span> <span word="generations">generations</span> <span word="would">would</span> <span word="be">be</span> <span word="in">in</span> <span word="danger">danger</span>。 <span word="It">It</span> <span word="is">is</span> <span word="up">up</span> <span word="to">to</span> <span word="us">us</span> <span word="to">to</span> <span word="take">take</span> <span word="effective">effective</span> <span word="measures">measures</span> <span word="before">before</span> <span word="the">the</span> <span word="situation">situation</span> <span word="gets">gets</span> <span word="out">out</span> <span word="of">of</span> <span word="hand">hand</span>。</p><p><span word="Ever">Ever</span> <span word="since">since</span> <span word="man">man</span> <span word="appeared">appeared</span> <span word="on">on</span> <span word="the">the</span> <span word="earth">earth</span>， <span word="man">man</span>＇<span word="s">s</span> <span word="survival">survival</span> <span word="has">has</span> <span word="been">been</span> <span word="heavily">heavily</span> <span word="relied">relied</span> <span word="on">on</span> <span word="nature">nature</span>。<span word="Almost">Almost</span> <span word="everything">everything</span> <span word="we">we</span> <span word="use">use</span> <span word="in">in</span> <span word="our">our</span> <span word="everyday">everyday</span> <span word="life">life</span> <span word="comes">comes</span> <span word="fromm">fromm</span>＇<span word="notate">notate</span>， <span word="ranging">ranging</span> <span word="from">from</span> <span word="the">the</span> <span word="food">food</span> <span word="we">we</span> <span word="eat">eat</span>， <span word="the">the</span> <span word="water">water</span> <span word="we">we</span> <span word="drink">drink</span>， <span word="to">to</span> <span word="the">the</span> <span word="wood">wood</span> <span word="which">which</span> <span word="is">is</span> <span word="tm">tm</span>＇<span word="ned">ned</span> <span word="into">into</span> <span word="furniture">furniture</span>。 <span word="With">With</span> <span word="the">the</span> <span word="development">development</span> <span word="of">of</span> <span word="technology">technology</span> <span word="and">and</span> <span word="population">population</span> <span word="growth">growth</span>， <span word="the">the</span> <span word="amount">amount</span> <span word="and">and</span> <span word="range">range</span> <span word="of">of</span> <span word="materials">materials</span> <span word="used">used</span> <span word="has">has</span> <span word="increased">increased</span> <span word="at">at</span> <span word="an">an</span> <span word="alarming">alarming</span> <span word="rate">rate</span>。 <span word="However">However</span>， <span word="natural">natural</span> <span word="resources">resources</span> <span word="are">are</span> <span word="not">not</span> <span word="inexhaustible">inexhaustible</span>。<span word="Some">Some</span> <span word="reserves">reserves</span> <span word="are">are</span> <span word="already">already</span> <span word="on">on</span> <span word="the">the</span> <span word="brink">brink</span> <span word="of">of</span> <span word="exhaustion">exhaustion</span> <span word="and">and</span> <span word="there">there</span> <span word="is">is</span> <span word="no">no</span> <span word="hope">hope</span> <span word="of">of</span> <span word="replacing">replacing</span> <span word="them">them</span>。<span word="The">The</span> <span word="widespread">widespread</span> <span word="water">water</span> <span word="shortage">shortage</span> <span word="is">is</span> <span word="an">an</span> <span word="example">example</span> <span word="in">in</span> <span word="point">point</span>。<span word="If">If</span> <span word="man">man</span> <span word="continued">continued</span> <span word="to">to</span> <span word="squander">squander</span> <span word="natural">natural</span> <span word="resources">resources</span> <span word="with">with</span> <span word="no">no</span> <span word="thought">thought</span> <span word="for">for</span> <span word="the">the</span> <span word="future">future</span>， <span word="the">the</span> <span word="later">later</span> <span word="generations">generations</span> <span word="would">would</span> <span word="be">be</span> <span word="in">in</span> <span word="danger">danger</span>。<span word="It">It</span> <span word="is">is</span> <span word="up">up</span> <span word="to">to</span> <span word="us">us</span> <span word="to">to</span> <span word="take">take</span> <span word="effective">effective</span> <span word="measures">measures</span> <span word="before">before</span> <span word="the">the</span> <span word="situation">situation</span> <span word="gets">gets</span> <span word="out">out</span> <span word="of">of</span> <span word="hand">hand</span>。</p>
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