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]
Figure: Atlantic Cod i6qj d*xv3y 5mx1ws4b Fishe jz / ju9+so5ukm e4.ajries of the Coast of Eastern Canada 1850-2000
Identify the most likely cause of the significant decrease in the number of fish caught seen in the early 1970s.
A. Climate change
B. A fish disease
C. Ocean current changes
D. Overfishing
参考答案: D
本题详细解析:
Option A is not correct as kh- 398l duzibthe decrease is too sudden and occurs in the 1960s when climate change effects were just being noticedd ih9 lkzub83- a little. Option B could cause a decline, but the fact that a huge harvest occurred right before the rapid decline implies that option D is the best choice. Option C is much like option A as it is generally related to climate change or El Niño, which is a periodic occurrence and tends to have a less severe impact.
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