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

If biomedical waste is not handled properly, people are likely to be affected by</h2></div>

Write main effects of the depletion of ozone layers.<br> </h2></div>

Global warming will cause.</h2></div>

Crop production without using chemicals is called as</h2></div>

Explain the relation between the greenhouse effect and global warming.</h2></div>

Which one of the following agro-chemical waste is sprayed on plants to increase their growth?

When domestic sewage mixes with river water, __________<br> </h2></div>