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Environmental Science

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

leukocytes
monocytes
lymphocytes
erythrocytes

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Environmental Science
Which of the following is not a green house gas?

Methane
SF6
Ozone
Carbon dioxide

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Environmental Science
Noise is measured using sound meter and the unit is

hertz
joule
sound
decibel

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

Bio diesel
Water
Air
Natural gas

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Environmental Science
Charged particles from the sun that travel through space at high speeds are called:

Radiation
The aurora
Solar wind
Solar flares

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Environmental Science
Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to

brackish water
soil pollution
acid rain
forest fire

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