All forms of water that comes down on earth is known as:
A. Fixation B. Accumulation C. Precipitation D. None of the above
Deforestation generally increase:
A. Rain fall B. Global warming C. Drought D. Both B & C
Plants get their nitrogen from:
A. Air B. Water C. Soil D. Other plants
The Ozone layer exists in:
A. Troposphere B. Stratosphere C. Mesosphere D. None of the above
Green House effect is mainly caused by:
A. Carbon dioxide B. Nitrogen C. Ethane D. Oxygen
What causes the soil pollution?
A. Industrial Waste B. Acid Rain C. Fertilizers D. Chemicals
Long-sight defect could be corrected by using——-lens?
A. ConcaveB. Convex C. Diverging D. None of these
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