次の英文を和訳してほしいです。

From the time that life first appeared on Earth, species hav...

SPS700 さんからの 回答

  • 2013/06/11 15:52
  • 回答No.2
SPS700

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英語 カテゴリマスター
     生命が地球上に最初に登場して以来、いろんな種が絶滅した。絶滅は進化の、自然な一部である。環境にもっとも良く順応した種は生き延び、環境への適応が遅い他の種は死ぬ。

    なのに絶滅に瀕した種が、今日こんなに注目を集めるのはなぜか? その理由の一つは、最近起こっている絶滅の多くは不自然だからである。

    種が絶滅する一番大きな理由は生活圏が無くなることだ。二三の例を挙げれば、人類が農地や都市を作るために森林を伐採したり、水流を汚染したりする度に、動物、植物、昆虫などの生存がだんだん難しくなる。

    こうして自然界に及ぼす人類の影響は、種の危機を招き、究極的には絶滅に至る。種が絶滅するもう一つの大きな原因は、気候の変化である。

    例えば、この記事にあるトカゲは、気温の変化が漸次に行われたのであれば、適応できたであろう、しかしながら、急激な気候の変化と、それに伴うトカゲの出生率の低下は、多くのトカゲの種類の将来を暗いものにしている。

    もし、人類の活動が気候変化の主因であれば、我々が主因となる変化の速度が速すぎるため、種が自然に順応出来ないのではないかと思われる。ヒトは順応が非常に速い、しかし他の種には、生活条件の変化に慣れるのに長い時間を必要とするものが多い。
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