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 graphsp1qdy/ef,qy 4(8hwk l shozp1e*ce2v 5qw1(g(dc4oi b xpw the concentration of atmospheric carbon dioxide over time c4e 2do*q1 wb v1(xe(zpgip5cat Mauna Loa 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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