List of top Biology Questions on Environmental Issues

Explain green house effect with reference to gases responsible for it and their sources.
What do you understand by ground water? Describe the causes for its depletion and remedies.
Mention any two harmful effects of sewage.
Which of the following is most harmful to the ozone layer?
Which of the following is affected by SO$_2$ pollution?
Explain the reasons for ozone depletion in the stratosphere.
Explain the dihybrid cross with the help of a checkerboard.
Write two causes of biodiversity loss.
What is biofertilizer? A farmer is advised to add a culture of which bacterium before sowing? How is this bacterium useful to the crop?
Which one of the following is not a cause of loss of biodiversity?
What is Dobson unit?
Which of the following statements is incorrect about organic farming?
Which of the following is not the reason for global warming?
Describe the role of animals in pollination.
How many chromosomes are found in Klinefelter and Turner Syndromes?
What is sewage?

फोटोकेमिकल स्मॉग में कौन हमेशा उपस्थित रहता है ? 
 

सैंटली बॉयल्ड को किनके विकल्प के रूप में अपनाया गया था ? 
 

अपशिष्ट जल के BOD का अनुमान किनकी मात्रा को मापकर लगाया जाता है ? 
 

Comment on Organic Farming.
Write an essay on population explosion and its control measures.
Which of the following statements is correct?
Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?
The thickness of ozone in a column of air in the atmosphere is measured in terms of:
Which one of the following statements is NOT correct?