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Why is the close planting of trees of the same species avoided in modern orchard
Why is the close planting of trees of the same species avoided in modern orchard
游客
2023-08-03
52
管理
问题
Why is the close planting of trees of the same species avoided in modern orchards and forests? [br] The number of the bellbird in New Zealand got controlled by ______.
选项
A、the decrease in distribution
B、human predation
C、deliberate introduction of its enemy animal
D、spread of certain kind of disease
答案
D
解析
细节题。见文章第三段第—句The decrease in distribution and numbers of some species of native birds in New Zealand- the bell bird for example-has been attributed to disease rather than predation,所以答案为D。
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