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习题练习：SL/HL Topic D4.2 Stability and change
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答题人: 游客未登录  开始时间: 25年02月01日 01:26  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) (组内1/4) 切至整卷模式 搜藏此题  
第 1 题组 (共 4 题 4 分)
  1. Which of the following contribute to the problem of w k qzp4;zn u *d0xombnztw+8/oh5t.7microplastic pollution in marine environme*xp. 704huwt +tn ;zbwon5zmqo/d k8znts?
I. Persistence of microplastics.
II. Biodegradability of microplastic.
III. Non-biodegradability or microplastic.
IV. Increased biochemical oxygen demand.

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2#
 
单选题 ( 1.0 分) (组内2/4) 切至整卷模式 搜藏此题  
  2. In Botswana, forest cover decreased from 18.8 million hectaxjex83z wyq5 bk2p5qg;0 2cjy+udau* res to 15.3 million hectares between 1990 and 2020. Calculate the perceqy5uaxjxg0 2pu*wjyc +q k52ezd8 3 b;ntage loss in forest cover during this period.

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3#
 
单选题 ( 1.0 分) (组内3/4) 切至整卷模式 搜藏此题  
  3. Which of the following does not contribute to ecosystem stability?m3cy8m p;ynl7*t y4iq

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4#
 
单选题 ( 1.0 分) (组内4/4) 切至整卷模式 搜藏此题  
  4. Why does leaching of nitrogen and phosphate fertilisers lead to an di8jeo/flt(2+; bu7sigmu 6*zmd 3ms increase the Biochemical Oxygen Demand (BOD) of local fts*iu23b(m g6 ojm8u le/d+ 7;fsizdmreshwater ecosystems (lakes and rivers)?

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5#
 
问答题 ( 1.0 分) (组内1/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第1/3题 
题组内容描述:
5. David Latimer created the mesocosm pictured below. It was last watered in 1972 and has been sealed ever since that date. It is still viable (living).
a. Suggest why the mesocosm is periv 9x y8o* ngm)pqwe11sisting despite being sealed for over 50 years.gvwq ixe 8y)on119pm*
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6#
 
问答题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第2/3题 
题组内容描述:
5. David Latimer created the mesocosm pictured below. It was last watered in 1972 and has been sealed ever since that date. It is still viable (living).
b. State two factors that are needed from outsip6xmr756,hi *phrqqix k: + nide the sealed system to maintain it x:+56iq qrxm *h76n,p ripkhis
sustainability.
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7#
 
问答题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
第 2 题组 (共 3 题 3 分) 当前第3/3题 
题组内容描述:
5. David Latimer created the mesocosm pictured below. It was last watered in 1972 and has been sealed ever since that date. It is still viable (living).
c. Discuss to what extent this sealed me 3e1g9 o,;ge cn)f7ejcmxvje(sd0 fx:fq3: by socosm models the ecosystem of planet earthgob3( ,enjfq9sx v fc)1ecdye:7 egj;:3fx0m .
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8#
 
问答题 ( 1.0 分) (组内1/3) 切至整卷模式 搜藏此题  
第 3 题组 (共 3 题 3 分)
6. Outline the role of keystone6fmdyghhkqw,b5uc;5 y8 yw 95 species in the maintenance of a stable ecosystemyy, f8uk h dmc5q9by6w5wg;5h.
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9#
 
问答题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
7. Fish are a renewable resource for hur1/cy37xu hb. dsmck r/)0krd man consumption. Outline how harvesting of fish can be sustainabdrrubk1//cd7 mc)r3kxy 0.s hle and how sustainability can be assessed.
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10#
 
问答题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
8. Describe, with an example, how the changes that o7 bv--7w lqtog,hwgims/8.shccur in primary succession cw igbl7 7wgoh . 8-sqt/m-,vshan lead to a climax community which has cyclical succession.
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