本题目来源于试卷: Threats to Biodiversity，类别为 IB环境系统与社会
[单选题]
Define the term ‘invakl4u .wq .(dv 3 b8o( tdzx(8uqryj,pasive s )8lbv;kkjbl6.c33avjt(ncr-t90h pludz; qpecies'.
A. A species that was introduced in an ecosystem (sometimes inadvertently) and could outcompete the native species, like the zebra mussels
B. A species that is endemic to an area, like the lemurs in Madagascar
C. A species that grew larger over time because they were not hunted as prey like the giant tortoises in Galapagos
D. A species that migrated to a continent when a land bridge formed between the two continents like the llamas in South America
参考答案: A
本题详细解析:
The zebra mussel originates from the lakes of Russia and Ukraine, and was accidentally introduced into the Great Lakes of the US through the discharge of contaminated cargo ship ballast water. All other options refer to species that were native to the areas mentioned.
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