The factor responsible for depletion of ozone layer is</h2></div>

Temperature variation in Pacific ocean in present time is called as</h2></div>

The substance that pollute the water are called _________.</h2></div>

How are the wild animals affected by cutting of forest?</h2></div>

<span>"Determination of Biological oxygen Demand (BOD) can help in suggesting the quality of a water body&quo…

Which element is cause of itai itai disease?</h2></div>

Classification of solid waste includes:<span><br> </span></h2></div>

Increased level of carbon dioxide in the atmosphere traps the heat rays reflected by <span>the earth caus…