本题目来源于试卷: SL Topic A4.2 Conservation of Biodiversity，类别为 IB生物学
[问答题]
7. There have been five mass extinctions recorded during ,cekxxwvdo:v7i dihc.my:l0g967ro mpy : 7;vi s1mh:u33knnx(rs ruo*tt)qb;: u- the history of life on earth. Many scientists accept that the sixth masn;u t* vb)3x sqn3: 1um:-iorukr( shts extinction is happening at the present time. Outline the differences between the sixth mass extinction and the previous five.
参考答案: The sixth mass extinction is anthropogenic.
It is caused by human activities.
It is driven by climate change.
Climate change is due to increased atmospheric carbon dioxide levels.
Increased carbon dioxide levels are of human origin/due to combustion.
Previous extinctions had non-human causes / examples of causes.
Note: 4 points needed for 4 marks
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