A water body has high BOD, indicating that water is</h2></div>

 The polluting strength of sewage is usually characterized by its</h2></div>

<p>What is green house effect? Write its two control measures.</p></h2></div>

<span>When air is contaminated by ______________ substances which have a ________________ effect on both the _____…

HCs are thermodynamically not stable towards<span><br> </span></h2></div>

In norway, what factor is involved in removal of salmon?<span><br> </span></h2></div>

How does saving paper impact deforestation? Explain.</h2></div>

Which of the following is one of the major factors that cause water pollution?</h2></div>