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  1. As the air temperature increases, with no addition of water vapor to the air, the dew point will:

  2. A.

     Remain the same

    B.

     Increase

    C.

     Decrease

    D.

     Increase and become equal to the air temperature

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  3. As the air temperature increases, with no addition of water vapour to the air, the relative humidity will:

  4. A.

     Remain the same

    B.

     Increase

    C.

     Decrease

    D.

     Increase until it becomes equal to the dew point temperature

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  5. Green House effect is caused by

  6. A.

     Increase in CO2

    B.

     Increase in O2

    C.

     Decrease in O2

    D.

     Decrease in CO2

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  7. If the air temperature remains constant, evaporating water into the air will ____ the dew point and ____ the relative humidity.

  8. A.

     Increase, increase

    B.

     Increase, decrease

    C.

     Decrease, increase

    D.

     Decrease, decrease

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  9. If the earth's average surface temperature were to increase, the amount of radiation emitted from the earth's surface would ____, and the wavelength of peak emission would shift toward ____ wavelengths.

  10. A.

     Increase, shorter

    B.

     Increase, longer

    C.

     Decrease, shorter

    D.

     Decrease, longer

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  11. The presence of high coliform counts in water indicates

  12. A.

     contamination by human wastes

    B.

     phosphorus contamination

    C.

     decreased Biological Oxygen Demand

    D.

     hydrocrbon contamination

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  13. As it travels along the food chain, the concentration of DDT

  14. A.

     increases

    B.

     remains constant

    C.

     decreases

    D.

     fluctuates randomly

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  15. Industrial melanism is an example of

  16. A.

     protective resemblance with the surrounding

    B.

     drug resistance

    C.

     defensive adaptation of skin against UV radiations

    D.

     darkening of skin due to industries

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  17. Coal is a __________ resource.

  18. A.

     abiotic

    B.

     inorganic

    C.

     deforestation

    D.

     none of the above

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  19. Extensive planting of trees to increase forest cover is called

  20. A.

     Afforestation

    B.

     Agroforestry

    C.

     Deforestation

    D.

     Social forestry

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