<span>The first pesticide to be used commercially was</span></h2></div>

Forest destruction results in<span><br> </span></h2></div>

BOD of wastewater is amount of</h2></div>

<span>The hard mineral crust formed at or near the surface of soil is known as</span></h2></div>

Study the following ststements regarding organic farming and select the correct ones.<br> (i) It utilities genetic…

The maximum hole of ozone is found over ______</h2></div>

Which one of the following is a component of hospital waste?

What do BOD and COD stand for?