Tuesday, April 24, 2012

Identifying the causes for the destruction…


 Ø  Natural causes :
       ·      Lightning strikes
        ·      Fires
        ·      Hurricanes
        ·      Earthquakes
        ·      Ice storms
         ·      extinction

Ø Human actions :
            ·      Construction  projects highways,subdivisions,factories and schools.
         ·      Agricultural practices-clearing a field,plowing a pasture,grazing cattle and sheep in a woodlot.
      ·      Forestry and mining
     ·      Pollution.
Problems associated with habitat destruction…
                 Ø Destruction of natural vegetation leads to loss of food and food.
Ø Wetlands are drained, destroying habitat, water, and cover.
Ø Natural waters are damaged by pollution, which causes the death of wildlife.
Ø Air pollution with sulfur dioxides, fluorides, and other acid gases endanger wildlife.
Ø Animals are killed by power vehicles on roads, railways, landing strips and forests.
Ø Diseases from domestic animals are sometimes spread to animal wildlife creating epidemics that endanger large populations.
Ø The introduction of nonnative species can destroy wildlife habitat for native species.
Ø Pesticide poisoning may kill some wildlife organisms and injure others.

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