Biology
Grade-7
Easy

Question

Which of the following are signs of environmental stress?

  1. Ozone depletion    
  2. Greenhouse gas emissions    
  3. Deforestation    
  4. All of the above    

hintHint:

  • One of the main reason of environmental stress is pollution and pollution causes so many changes in environment.

The correct answer is: All of the above


    All of the above
    • Ozone depletion, deforestation and green house gases emission all of these are the signs of environmental stress.
    • All the factors are connected to pollution either reason or result of pollution.

    • Ozone depletion leads more approach of ultraviolet radiations from sun to earth which is very harmful to living beings.
    • Deforestation is a stressing element for environment as trees are very important to fulfill our so many requirements like oxygen, wood, medicines etc.
    • Green house gases leads so many dangerous diseases.
    • So all of these are the reasons of environmental stress. 

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