CBSE Class 10 - Environmental Problems Videos

• (A)Assertion : aquarium needs to be cleaned regularly (R)Reason : In an aquarium there is no microbes to clean the water.   a) both A and R are true and R is correct explaination for A.  b) both A and R are true but R notthe correct explanation of c)  A is true R is false d) A is false R is true         
• biomagnification
• Why is damage to ozone layer is a cause of concern? Why steps are  being taken to limit this damage?
• What is the effect of biomagnification on organisms of different trophic levels, especially the tertiary consumers?
• How doesw water shed management increases biomass production  
• dumping of non biodegradable wastes reduce crop yield . why?
• Please solve this below question
  
• define the term biomagnification  
• explain the phenomenon of biological magnification .How does it affect organisms belonging to different tropic level particularly the tertiary consumers
  
• Recycling is a good method for conservation of resources and disposal of waste. Justified the statement    

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