Write one harmful effect of deforestation on environment.</h2></div>

Farming without the use of chemicals as fertilizers, herbicides and pesticides is known <span>as…

Quantity of solid waste produced, depends on living standard of<span><br> </span></h2></div&g…

If there was no <span class="katex"><span class="katex-html" aria-hidden="true"&g…

Drained sewage has B.O.D.</h2></div>

How burning of fossil fuels leads to increase in global warming?</h2></div>

Major source of emissions in a motor vehicle: crackcase, carburettors, fuel tank and<span><br> </span>…

What does the increase in the level of greenhouse gases lead to?