Interaction & Interdependence C.9 Transfers of Energy & Matter (id: e19a9ae5d)

本题目来源于试卷: Interaction & Interdependence C.9 Transfers of Energy & Matter，类别为 IB生物学

[问答题]
The following graphs show the concentratiotj- pj4v.ncv 2n of atmospherk 7)qex2ai b6aic carbon dioxide over time at Mauna Lka2qbxe67ia ) oa Observatory in Hawaii, United 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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