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习题练习:SL Topic C4.2 Transfers of energy and matter

 作者: admin   总分: 10分  得分: _____________

答题人: 游客未登录  开始时间: 25年02月01日 00:51  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) (组内1/3) 切至整卷模式 搜藏此题  
第 1 题组 (共 3 题 3 分)
  1. Which of the following are energy transformations that occur 4-1wtug46a x9cntb yv in a food web?
I. Light to chemical energy in photoautotrophs.
II. Chemical energy to heat energy in first order consumers.
III. Heat energy to chemical energy in saprotrophs.
IV. Chemical energy to mechanical energy in apex predators.

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2#
 
单选题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
  2. How can energy be transferre 27mg*sxd zvfb98q (yud from a secondary consumer to a saprotroph and lo uzdf vxm7*sb2y8(9q gst from the food chain ?
I. As heat energy
II. As energy in excreted materials.
III. From undigested matter as egested materials.
IV. By respiration.

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3#
 
单选题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
  3. Which of the followx8 pjfco+(a3 v )z1nmcing decrease at the stage in the food chain from producer to primary conmj xvcn a+czf1)o p8(3sumer?
I. Population.
II. Biomass.
III. Chemical energy.
IV. Heat energy

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4#
 
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:
4. The diagram shows the carbon cycle with some words replaced by numbers. Use the diagram to answer the questions below.
a. In the table below write the number on the diagram that corresponds veesn x. 4 *anxhw7+,vfhhvws3 7jv17 to the word in th* fex41ew, 73h hns7hsa+n7wv vv .vjxe table.

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5#
 
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:
4. The diagram shows the carbon cycle with some words replaced by numbers. Use the diagram to answer the questions below.
b. Which process on the dfzci of;:w iharc3fi66 y*/qs7m / 8ediagram is an anthropogenic cause of an increase in atmosphei/;afie/zof y7dmc6 hi3q r8s w*6 cf:ric carbon dioxide?
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6#
 
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:
4. The diagram shows the carbon cycle with some words replaced by numbers. Use the diagram to answer the questions below.
c. Outline why carbon sources and sinks need to be balanced in the ecosystem.jlsl ft-p vvo/m2l0 86
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7#
 
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)
题组内容描述:
5. The table represents the flow of chemical energy in a freshwater ecosystem.
a. Calculate the percentage of the chemical energy in the producers that i ex(9g:bzn)m ft2dde.s available in the s2mz:. dxd gf)n9tbee( econdary consumers.
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8#
 
问答题 ( 1.0 分) (组内2/3) 切至整卷模式 搜藏此题  
b. Outline why the food chain hp( pise6( w)ldg3oa4gjo /f -u b4iq)mas only four levels.
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9#
 
问答题 ( 1.0 分) (组内3/3) 切至整卷模式 搜藏此题  
c. Explain why the energy available at each trophic level is measured io9 xgcg2f*gy5 mgq-4d2dvyxf ,b8v+ mn$KJM^{-2}yr^{-1}$
.
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10#
 
问答题 ( 1.0 分) (组内1/1) 切至整卷模式 搜藏此题  
第 4 题组 (共 1 题 1 分)
6. Explain why autotrx tal s86llb5+ophs need to have an external energy source such as light.
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