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Environmental Science

Environmental Science
Which of the following is an extinct species?

Ostrich
Tiger
Lion
Dodo

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Environmental Science
_________ is a mixture of 50 - 90% of methane

Air
Natural gas
Bio diesel
Water

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Environmental Science
Mobile combustion accounts

10-20% of air pollution
50-60 % of air pollution
5-10 % of air pollution
40-50% of air pollution

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

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Environmental Science
The heat energy released when water vapour changes to a liquid is called:

Latent heat of fusion
Latent heat of condensation
Latent heat of evaporation
Latent heat of fission

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Environmental Science
The time of day when the relative humidity reaches a maximum value is usually

Just before sunrise
About midnight
At the time when the air temperature is highest
At the time when the air temperature is lowest
In the middle of the afternoon

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