Suggest a few measures for controlling carbon dioxide levels in the atmosphere.</h2></div>

BOD is</h2></div>

What amount of BOD indicates low water pollution?

What suggestions will you give to save an imbalanced ecosystem ?</h2></div>

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

<span>What is the effect of deforestation on amount of <span class="katex"><span class="ka…

Plants control the humidity in air by</h2></div>

What immediate hazard is likely to occur if the temperature of the earth rises by 5<span class="katex">&…