4-2最後一段翻譯

Evident indicates that more than half of all life on the earth has been wiped out in five mass extinctions over the past 500 million years.Scientific hypotheses explaining the causes of these mass extinctions include asteroids colliding with the earth,large-scale emissions of toxic hydrogen sulfide(H2S) from the ocean into the atmosphere,and climate change.Such mass extinctions opened up opportunities for the evolution of new species and shifts in the locations of some ecosystems.On a long-term basis,the four scientific principles of sustainability,especiallybiodiversity,have enabled the earth to adapt to drastic changes in environmental conditions.

證據顯示在地球上多於半數的生命在過去的5億年的5大滅絕中毀滅。科學假說解釋這些大滅絕的原因包括小行星撞地球,大規模有毒的硫化氫從海洋散發到大氣中和氣候變遷。這樣的大滅絕提供新物種的演化和轉移在生態系統中的位置的機會。在一個長期的根據,4個永續性的科學原則,特別是生物多樣性,已經使地球能夠適應環境狀態方面的激烈變化。