Crop production without using chemicals is called as</h2></div>

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

Excess of carbon dioxide in the atmosphere leads to </h2></div>

Select from the following, the substances, which have posed a threat to the environment:<br> Aerosols, consumers, …

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

Which of the following does not contributes to greenhouse effect?</h2></div>

Global warming is caused by greenhouse effect. Justify.<br> </h2></div>

Planting of trees on barren land is called </h2></div>