Q. What increases crop yields by putting nutrients in the soil?

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Q. Which country has the large rivers which has captured water from other countries in the wetter climate

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Q. When the ozone depletion was first noticed over Antarctica?

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Q. What is the average rain fall per year in cherrapunji-India?

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Q. In 1989, where the ozone depletion was recorded?

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Q. What are used as a propellant in aerosol spray cans?

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Q. What are the examples of CFCs?

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Q. CFCs stands fro

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Q. Increased level of UV radiations reaching the surface have been linked to

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Q. Coolants used in refrigerators and air conditioning systems also contains

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Q. What are the examples of acid rain in the world?

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Q. Acid rain is mainly a problem of

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Q. The high concentration of Hydrogen ion in the soil causes

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Q. Why the environmentalists have predicted that the 90% of Germany's trees will die by the mid of this century?

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Q. Why acid rain is a major problem of Scandinavian countries?

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Q. Increased level of acid in the soil has a devastating effect on

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Q. Fishes can not tolerate

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Q. What nutrients are harmful for plant roots?

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Q. The pH below 7 is

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Q. How the subsistance farmers maintain the soil fertility?

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