Continuity and Change D.12 Climate Change (id: d7ff7ef67)

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]
The following graphs show the concentration of atmospheric carbon di m.;cuklun2i(xiy8*i0g(dnissz - ; o ox5fb sk(prp) 3b;0 nsgfizia(.ide over time at Mauna Loa Observatory in Hawaii, Unifi b) i(rsgf pn (53kzasp;b.0ted States.


1.Describe the overall trend in atmospheric carbon dioxide levels over time.

2.State one factor that has significantly contributed to increases in atmospheric carbon dioxide concentration as seen in the graphs.

3.Explain why the concentration of atmospheric carbon dioxide fluctuates annually.

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