Soil Class 7 PPT

 Page 1


CHAPTER - 9 
 
SOIL 
Page 2


CHAPTER - 9 
 
SOIL 
1) Importance of soil :- 
   i) Soil  is an important natural resource. 
 ii) Soil helps in the growth of plants by holding the  
      roots and supplying water and nutrients. 
iii) Soil is essential for agriculture which provides us  
     food, clothing and shelter. 
iv) Soil is a habitat for several organisms like ants, earth  
     worms, snails, centipeds, millipeds, snakes, rats, beetles  
     etc.  
Page 3


CHAPTER - 9 
 
SOIL 
1) Importance of soil :- 
   i) Soil  is an important natural resource. 
 ii) Soil helps in the growth of plants by holding the  
      roots and supplying water and nutrients. 
iii) Soil is essential for agriculture which provides us  
     food, clothing and shelter. 
iv) Soil is a habitat for several organisms like ants, earth  
     worms, snails, centipeds, millipeds, snakes, rats, beetles  
     etc.  
Page 4


CHAPTER - 9 
 
SOIL 
1) Importance of soil :- 
   i) Soil  is an important natural resource. 
 ii) Soil helps in the growth of plants by holding the  
      roots and supplying water and nutrients. 
iii) Soil is essential for agriculture which provides us  
     food, clothing and shelter. 
iv) Soil is a habitat for several organisms like ants, earth  
     worms, snails, centipeds, millipeds, snakes, rats, beetles  
     etc.  
Living organisms found in the soil 
Page 5


CHAPTER - 9 
 
SOIL 
1) Importance of soil :- 
   i) Soil  is an important natural resource. 
 ii) Soil helps in the growth of plants by holding the  
      roots and supplying water and nutrients. 
iii) Soil is essential for agriculture which provides us  
     food, clothing and shelter. 
iv) Soil is a habitat for several organisms like ants, earth  
     worms, snails, centipeds, millipeds, snakes, rats, beetles  
     etc.  
Living organisms found in the soil 
2) Soil pollution :- 
    Soil pollution is caused by plastics , chemicals, pesticides 
and other waste products. 
    Soil pollution can be reduced by :- 
 i) Avoiding use of plastics. 
ii) Treating of wastes and chemicals before releasing into  
    the soil. 
iii) Reducing use of pesticides. 
v) Afforestation – planting more trees.