When harmful substances such as sewage, toxic chemicals get mixed with water, then:</h2></div>

Which of the following is/are caused due to deforestation?</h2></div>

What are the agents that bring about such an undesirable change (pollution) are called?

How does deforestation affect the biodiversity of the forest ecosystem </h2></div>

Some of the major contaminants of water are:<br> </h2></div>

Name the unit which is used to measure the thickness of ozone layer?</h2></div>

What are joint forest management committees? What values do they depict?</h2></div>

What of the following was adopted as the substitute for open-burning dumping grounds?