亚洲人成网站18禁止中文字幕,国产毛片视频在线看,韩国18禁无码免费网站,国产一级无码视频,偷拍精品视频一区二区三区,国产亚洲成年网址在线观看,国产一区av在线

Home
Reading
Listening
Translation
Writing
Vocabulary
Forum
Home > Learning English > Extensive Reading
Pollution makes male birds mate with each other

科學(xué)家稱:水污染使鳥兒變成同性戀
科學(xué)家稱:水污染使鳥兒變成同性戀


閱讀難度:

Water pollution is posing a threat to bird -populations by causing males to mate with each other.

Scientists believe poisonous metal compounds entering the food chain can affect sexuality, causing a reduction in offspring.

They found that even relatively low levels of methylmercury in the diet of male white ibises caused the birds to pair up with each other, snubbing females. ...

(點擊查看《每日郵報》原文)

???????環(huán)境污染的惡劣后果已然影響到了世界的各個角落,而且深受其害的遠(yuǎn)不止人類自己。近日,科學(xué)家實驗證明,嚴(yán)重的水污染使得鳥兒變成了同性戀。

???????最近科學(xué)家們通過研究發(fā)現(xiàn),由于喝了受污染的水,白鷺的性取向開始發(fā)生變化,雄性白鷺更傾向于與同性結(jié)合,反而對異性白鷺表示出前所未有的冷淡。

???????美國科學(xué)家皮特?弗蘭德里克近日做了一項實驗,將160只幼年白鷺分為4組,在它們的飲用水中填入不同劑量的水銀,觀察它們的反應(yīng)和變化。

???????第一組白鷺的飲用水中被放入百萬分之0.3的水銀;第二組含有百萬分之0.1的水銀;第三組的劑量是百萬分之0.05,而第四組則是沒放水銀的純凈水。

???????實驗證明,飲用了這些含有水銀的水之后,前三組白鷺中出現(xiàn)的同性戀現(xiàn)象明顯多于第四組。很多雄性白鷺不僅與同性筑起了巢,而且還成雙成對地在一起生活。

???????弗蘭德里克表示,科學(xué)家們已經(jīng)知道水銀會降低白鷺的雄性激素分泌,但讓他們沒有想到的是,水銀還會導(dǎo)致他們變成同性戀,這會讓白鷺的繁衍率大大降低。

???????而更嚴(yán)重的是,其他鳥類也會受到類似的影響,它們的生存狀態(tài)不容樂觀。

Print E-mail Bookmark and Share

Go to Forum >>0 Comments

No comments.

Add your comments...

  • User Name Required
  • Your Comment
  • Racist, abusive and off-topic comments may be removed by the moderator.
熱點詞庫
- 'Jedi master' jailed for beating
- Girl, 12, fends off would-be kidnapper with her iPod
- Google Street View snaps 'naked man reading on porch'
- High school football team spoofs Glee's Beyoncé scene
- New 'dog only' beer hits shelves
Chinglish Corner
    1. <ul id="556nl"><kbd id="556nl"><form id="556nl"></form></kbd></ul>
      <thead id="556nl"></thead>

      1. <em id="556nl"><tt id="556nl"></tt></em>
        <ul id="556nl"><kbd id="556nl"><form id="556nl"></form></kbd></ul>

        <ul id="556nl"><small id="556nl"></small></ul>
        1. <thead id="556nl"></thead>

          亚洲人成网站18禁止中文字幕,国产毛片视频在线看,韩国18禁无码免费网站,国产一级无码视频,偷拍精品视频一区二区三区,国产亚洲成年网址在线观看,国产一区av在线 人妻无码久久影视 日韩久久久久久久久久久久 精品国产香蕉伊思人在线 无码国产手机在线a√片无灬 91在线视频无码