本题目来源于试卷: SL Topic C4.2 Transfers of energy and matter，类别为 IB生物学
[问答题]
c. Outline why carbon sources and sinks need to be balanced ineo3; .hrllva9 the ecosyro+ nw e1cb;m7vx/w e4stem.
参考答案: Carbon sources produce more carbon dioxide than they absorb.
Carbon sinks absorb more carbon dioxide than they produce.
If carbon sources and sinks are in balance, atmospheric carbon dioxide remains constant.
Ecosystems can be both sources and sinks in different seasons or climatic conditions.
本题详细解析:
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