本题目来源于试卷: Continuity and Change D.11 Stability & Change，类别为 IB生物学
[单选题]
What are the effects of-k9 v5l,x9:r/i t qc1pbnplix pams1oog r0 +5m)px4-ewut pf4bu/h) qvwc; o.lastic pollution in marine waters?
I. When plastic enters marine waters, it breaks down into smaller pieces due to sunlight, wind and water action, eventually disappearing.
II. Sea turtles consume plastic because of its transparency and resemblance to jellyfish.
III. Plastic nets entrap fish, sea turtles and mammals.
A. I only
B. II and III only
C. I, II and III
D. III only
参考答案: B
本题详细解析:
Statements II and III are correct and describe some of the many effects of plastic pollution in the ocean. Statement I partially describes what happens to plastics when they are dumped in the ocean. They do become small pieces, but do not disappear. The Great Pacific Garbage Patch is not biodegradable and it is not visible because it consists of microplastics. It looks like a cloudy soup. In the ocean, the Sun breaks down the plastic, and this photodegradation process causes microplastics to form. Wind and water also break down the plastic waste in the ocean waters. Microplastics are now being tracked even on the ocean floor. They are extremely harmful to marine life.
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