261. What is the primary reason for targeting 'biodiversity hotspots' for conservation ?

1. 1. To protect all areas of threatened species would not allow for new species to develop

   
   
   

   2. The number of species threatened far exceeds our capacity to protect them and we can therefore on;y concentrate on areas of highest species diversity

   
   
   

   3. They are areas where people do not live and conservation would therefore not be effecting the economic development of the area

   
   
   

   4. The are the only areas where species are seriously threatened in the world

   
   
   

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   NA

   Correct Option: B

   NA

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262. The International year of Biodiversity was

1. 1. 2010

   
   
   

   2. 2011

   
   
   

   3. 2012

   
   
   

   4. 2013

   
   
   

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   NA

   Correct Option: A

   NA

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263. The single greatest current threat to biodiversity is

1. 1. Global warming

   
   
   

   2. Habitat destruction

   
   
   

   3. introduced species

   
   
   

   4. overhunting

   
   
   

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   NA

   Correct Option: B

   NA

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264. Edge species

1. 1. decrease biodiversity

   
   
   

   2. exist only increases that have been altered by humans

   
   
   

   3. May require conditions found in both of the bordering ecosystems

   
   
   

   4. require the unique homogenous edge eivironment

   
   
   

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   NA

   Correct Option: B

   NA

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265. The "greenhouse effect" refers to :

1. 1. Increasing agricultural yields

   
   
   

   2. Gradual warming of the earth's surface

   
   
   

   3. Build-up of toxic airborne pollutants

   
   
   

   4. Reduction in the earth's ozone layer

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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