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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 microplas(bq/ebq- 0m w8d7b3quh khro3tic pollution in marine e qhmqobhud e7(/03wrb-bq83 knvironments?
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 mill o +uk,*tig3v 8r nx*) dyuu2dv)wbro-ion hectares to 15.3 million hectares between 1990 and wb*kdr v3ovo-2d8)u)+g itx* un u y,r2020. Calculate the percentage 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 3q*kzgklxz96(neh 2p *k*5 mql skjh :stability?

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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 au+b21( 4c +ynb*dw4fpmoja/e , iwczv2ooc k5 n increase the Biochem w4*bo,e/z d +woc1an fvi25m+b2opjcy 4ku(c ical Oxygen Demand (BOD) of local freshwater 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 persisting despite being sealed for ovti7) 6 od59xjgrv,r1abwt+m wi/2fn zer 50 years)v t tg5 /ion,r6md9wb1 wjrx+z7a if2.
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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 ne a8 +77 stbyrna ia.yh./mkct;eded from outside the sealed system to maintain ;hc.rbti/a sa8k7mta7 n +yy .its
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 mesocosm models the ecosy/j kghpyne( -6stem of planet ear ye ph6/g(-jnkth.
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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 keystone species in the maintenance of tzj:4 pblr12g d6 gj6va stable ecosystemgd24jl jzt6vr6g 1b:p .
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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 resou gy v 3o,ymv43ubfm)-brce for human consumption. Outline how harvesting of fish can be sustainable y)f3vvb,3- 4mugo ymband 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,udu alw-)k2c .2eyhah)/zp8 p how the changes that occur in primary succession can lead to.8 da )zl2h-2a u hcwuey/pk)p a climax community which has cyclical succession.
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