What are the different ways in which water gets contaminated?<br> </h2></div>

How can you contribute to the maintenance of green wealth of your locality?<br> Make a list of actions to be taken…

Which of the following conditions lead to formation of ozone?</h2></div>

'Nitric acid' reacts with ozone, resulting in the production of __________.<span><br> </span></h2&g…

Name five common water pollutants.</h2></div>

Biochemical Oxygen Demand (BOD) in a river water</h2></div>

What is reforestation?</h2></div>

What are the disadvantages of global warming?</h2></div>