Crop rotation is an important part of organic farming. Why is monocropping problematic?</h2></div>

BOD refers to</h2></div>

What does the increase in the level of greenhouse gases lead to?

Number of ozone depleters identified by Viena convention for Protection of Ozone Layer (1992) is</h2></div>

UV light radiation cause</h2></div>

Peak concentration of ozone occurs in the atmosphere above a height of</h2></div>

What is the logo of recycling? Explain </h2></div>

Is deforestation associated with global warming? Explain. </h2></div>