5th Class Science Our Environment Soil Pollution

Soil Pollution

Category : 5th Class

*   Soil Pollution

 

Excessive, unorganized agriculture and no judicious use of chemical fertilizers, pesticides, weedicides, herbicides and insecticides etc contaminate the soil which is called soil pollution. Polluted soil leads to the growth of polluted plants and this toxicity finally enters the human/ animal's body through food chain.

 

*           Causes of Soil Pollution

 

 

 

*           Consequences of Soil Pollution

 

 

*           Polluted Soil Causes Disease  

 

   

 

*        How can we maintain the quality of soil?

Look at the following chart to understand the method by which, we can maintain the quality of soil  

            

   

Cow dung adds organic matter to the soil to enrich soil fertility  

 

Crop rotation – growing leguminous plants alternatively with cereals to maintain nutrients deficiency in the soil naturally

 

 

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       Find the statement which is true about soil pollution?

(a) Brain and nerve can be damaged due to soil pollution

(b) Malaria is caused by the protozoa that live in soil

(c) Metals, pesticides, solvents, lead and oil spills are soil contaminants

(d) Deforestation leads to soil pollution

(e) All of these

 

Answer: (e)

Explanation 

Soil pollution causes many diseases. Hence, all the statements in the options are true. Therefore, option (e) is correct and rest of the options is incorrect.

 

 

       Consider the following statements:

Statement 1: Climate of a region is affected due to soil pollution.

Statement 2: Climate of a region is not affected due to soil pollution.

Which one of the following is correct about the above statements?

(a) Statement 1 is true and 2 is false       

(b) Statement 1 is false and 2 is true

(c) Both statements are true                     

(d) Both statements are false

(e) None of these

 

Answer; (a)

 Explanation

Soil pollution affects vegetation which in turn affects climate. Therefore, option (a) is correct and rest of the options is incorrect..

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