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Environmental Science

Environmental Science
When human body is infected by infection __________ type of cells are activated to defend the body.

erythrocytes
leukocytes
lymphocytes
monocytes

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Environmental Science
Organisms having the potential for interbreeding and producing fertile offspring is called

Species
Class
Genus
Order

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Environmental Science
The final stable community in an ecological succession is called the

seral community
ultimate community
climax community
final community

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Environmental Science
Percentage of forest area recommended by the the national forest policy for plains is

0.1
0.3
0.33
0.67

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Environmental Science
Which one of the following is the correct percentage of the two green house gases that contribute to the total global warming?

CO2-40%,CFCs-30%
N2O-6%, CO2 -86%
Methane-20%, N2O-18%
CFCs -14%, Methane-20%

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Environmental Science
The unfavourable alteration of environment due to human activities is termed as

catastrophe
pollution
ecological degradation
ecological disturbance

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