Page 102 - Science - 5
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Various methods adopted to protect the soil from erosion are as follows :

                                                          Planting Trees or Afforestation
                                                          Planting
                                                          Planting Trees or AfforestationTrees or Afforestation
                                                          Afforestation is an effective method to prevent
                                                          soil  erosion.  Roots  of  the  plants  hold  the  soil
                                                          particles together and thus protect the soil from

                                                          being  carried  away  by  wind  or  water.  Trees,
                                                          bushes,  grasses  and  hedges  along  the
                                                          boundaries of farmlands shield the topsoil and

                                                          prevent soil erosion.
                              Afforestation
                                                          Terrace FarmingFarming
                                                          Terrace
                                                          Terrace Farming
                                                          On hill slopes, farming is done by cutting steps
                                                          and terraces to reduce soil erosion. It is called

                                                          step farming or terrace farming. This reduces the
                                                          speed of water with which the soil flows downhill.
                                                          By Growing Grass
                                                          By Growing GrassGrowing Grass
                                                          By
                                                          When the land is not being used for farming, it is
                                                          good to grow grass or some other creepers on it.

                    The grass has spreading roots. It covers the topsoil and holds it firmly.
                    Constructing
                    Constructing Dams and EmbankmentsDams and EmbankmentsDams and Embankments
                    Constructing
                    During a flood, running water washes away a large part of the topsoil. Dams
                    and embankments are built on rivers to check soil erosion by floods.

                           One Step AheadOne Step AheadOne Step AheadOne Step AheadOne Step Ahead
                           One Step Ahead
                           One Step AheadOne Step AheadOne Step AheadOne Step AheadOne Step Ahead
                           One Step Ahead
                             Supporting  organic  farming  by  purchasing  organic  foods  and

                             encouraging  your  local  retailer  to  stock  organic  products,  can  help  in
                             conservation.


















                    SOIL POLLUTION

                    Soil pollution is caused due to a number of human activities. The main cause
                    of soil pollution is dumping of solid non-biodegradable wastes on land. The


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