Extinction events 2
Scientists?estimate that there have been at least 5 mass extinctions in the last 540 million years.科學(xué)家估計(jì)在過去的5億4千萬(wàn)年間至少發(fā)生了5次大滅絕娜搂。
They also believe that we have entered a new extinction event.他們也相信我們已經(jīng)進(jìn)入了一個(gè)新的滅絕事件蟆融。
Species are becoming extinct at a much faster rate than before.物種滅絕的速度比以前快得多
Instead of asteroids or volcanic eruptions, the current event is the result of human activities.而不是小行星或火山爆發(fā)往史，目前的事件是人類活動(dòng)的結(jié)果骄噪。
Human activities, for example, have led to global warming.例如，人類活動(dòng)導(dǎo)致了全球變暖掏膏。
Global warming is the result of an increase in carbon gases in our atmosphere.全球變暖是大氣中碳?xì)怏w增加的結(jié)果劳翰。
These gases trap heat from the sun, so the Earth is getting warmer.這些氣體吸收太陽(yáng)的熱量，所以地球正在變暖馒疹。
As a result, sea levels are rising and weather patterns are changing.結(jié)果佳簸，海平面上升，天氣模式改變颖变。
In addition, we humans are destroying the habitats of many plants and animals.此外生均，我們?nèi)祟愓谄茐脑S多動(dòng)植物的棲息地。
Cutting downforestsand pollutingriversdestroys thehabitatsof manyformsof life.砍伐森林和污染河流破壞了許多生命形式的棲息地腥刹。
There is no longer any doubt that this is happening毫無(wú)疑問马胧，這種情況正在發(fā)生
Species of life are disappearing at an increasing rate.生命物種正在以越來(lái)越快的速度消失。
Global temperatures are rising and weather patterns are changing.全球氣溫正在上升衔峰，天氣模式正在發(fā)生變化
Scientists arewarningus that fastactionis necessary tosaveour future.科學(xué)家警告我們佩脊，為了拯救我們的未來(lái)蛙粘，必須迅速采取行動(dòng)。
If we don't act, we may go the way of the dinosaurs.如果我們不采取行動(dòng)威彰，我們可能會(huì)重蹈恐龍的覆轍出牧。
This new extinction event is caused by humans.這種新的滅絕事件是由人類造成的。
