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question_answer1) Give reasons for the need to increase the amount of arable land.
question_answer2) Write in brief the factors that affect the formation of soil.
question_answer3) What are the consequences of deforestation?
question_answer4) What are the causes of soil erosion?
question_answer5) What are the various techniques of preventing soil erosion?
question_answer6) How can rain water be harvested?
question_answer7) 'More work in the world must be done on how to reuse water - explain this statement by giving examples.
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