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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Q. What are the effects of acid rain on buildings?

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Q. The pH above 7 is

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Q. Scandinavian countries are

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Q. Acid rain is a problem of

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Q. In Scandinavia, high acidity is damaging

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Q. What health impacts are caused by acid rain in humans?

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Q. Which Asian countries has an acid rain problems?

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Q. What is main source of water pollution in Pakistan?

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Q. Name the five main tributaries which provides water to the country(Pakistan)?

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Q. What is the half life of plutonium?

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Q. Which country has the world's largest canal irrigation system?

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Q. What is the biggest cause of ground water pollution?

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