本题目来源于试卷: Aquatic Food Production，类别为 IB环境系统与社会
[单选题]
Identify which of the f:041udnxfuwdrz s h ++ollowing ) whd**8cj w,ck1lkvb are the major producers in aquatic ecosystems.
A. Small fish species
B. Grasses
C. Phytoplankton
D. Seaweed
参考答案: C
本题详细解析:
Option A is not a producer, but rathp,(dlb 08rv5dw/d.nluv fqo;1 cl) za er a consumer. Options B and D are producers in some aquatic ecosystems, but play a much less sigv 8 )wqrn,b 5fpa du d0z;(l1v.llcd/onificant role than phytoplankton, thus option C is correct.
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