Most severe environmental hazard to mankind is due to:

Related Mcqs:

1. What immediate hazard is likely to occur if the temperature of the earth rises by 5?C?

   A. Melting of polar ice
   B. Destruction of phytoplanktons
   C. Inundation of coastal towns
   D. Increase in productivity

2. The first international conference for globalizing the environmental problems ws held at:

   A. Stockholm
   B. Paris
   C. London
   D. Tokyo

3. Competition for water, minerals, light and space is most severe between two:

   A. Closely related species occupying the same niche
   B. Closely related species occupying different niche
   C. Unrelated species occupying the same niche
   D. Species occupying different overlapping ecosystems

4. A habitat of long severe winters and growing season limited to a few months of summer constitutes:

   A. Savana ecosystem
   B. Taiga ecosystem
   C. Tundra ecosystem
   D. None of the above

5. These are generally, but not always, developed above the birch zone and in patches, sometimes extensive, within it, probably conditioned by edaphic and biotic factors, in Kashmir, Gilgit, Chitral and Hazara. This type ascends normally to ______ or more above the sub-alpine forests and climate must be similar but more severe than in sub-alpine forests:

   A. 140 m
   B. 150 m
   C. 160 m
   D. 170 m

6. Competition is most severe between:

   A. Closely related species growing in the same habitat
   B. Closely related species growing in the same niche
   C. Distantly related species growing in different niche
   D. Distantly related species growing in different habitat

7. Non-renewable environmental resources include various metals non-metalic minerals and

   A. Coal
   B. Natural gas
   C. Oil
   D. Fossil fuels

8. Environmental stability is:

   A. All the material resources around us and degradation is closely related to the pattern of resource use within the society
   B. The trees are the most important feature of the environment in which we leve, work, play and enjoy the bounties of nature
   C. Both (a) & (b)
   D. None of these

9. Environmental Amelioration is:

   A. Environmental stability
   B. Trees and the landscape
   C. Trees and man
   D. Control of air pollution
   E. All of the above

10. A group of plants living together under similar or dissimilar environmental conditions is called:

    A. Vegetation
    B. Flora
    C. Species
    D. Community