Continuity and Change D.12 Climate Change (id: cc2632d8e)

本题目来源于试卷: Continuity and Change D.12 Climate Change，类别为 IB生物学

[问答题]
1.Describe the method used r4 r t.+o+pft8x: g6hs9rphllubi 65a by scientists tojkyl2: e3u(vx k0r 9(x9gydne deduce carbon dioxide concentrations from txkkxj(r( e2 y03 yel9nu v9gd:housands of years ago.

2.Explain why rising levels of atmospheric carbon dioxide are the main cause of climate change.

3.How have increased carbon dioxide levels affected reef-building corals in marine waters?

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