本题目来源于试卷: IB ESS Unit 2: Ecosystems & Ecology，类别为 IB环境系统与社会
[单选题]
State which of the following ;9rm8 r 7a5rze4e uexnsampli+q. ns-nd.gy6h jg yx;ng techniques is not effective for sampling motile (moving) specimjnd;.hgsyq y 6+g.-n xens.
A. Capture-mark-recapture
B. Sweep nets
C. Quadrat sampling
D. Quadrat sampling
参考答案: C
本题详细解析:
Option C is correct as quadrats are laid down in one place and thus are not ud emggm;5 h.3m76vikiseful or accurate in sampling creatures that can easily enter or leave a sample square. Each of the other three options are used specifically for movinei53;gdm hgmi 76m.kvg creatures.
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