ECOLOGY
ENVIRONMENTAL ISSUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the line between the desert and cultivated areas
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the line dividing rural and urban neighborhoods
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the point in a river at which water pollution begins
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a barrier put up around factories to keep people away for their own safety
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Detailed explanation-1: -They imagined a thin but powerful green line strung between the Indian Ocean and the Atlantic: a strip of trees 8, 000 km long and 15 km wide. It would trace the Sahel, the dryland region sandwiched between the Sahara desert to the north and the savannah to the south. Today, this vision has been refined.
Detailed explanation-2: -Desert greening is the process of man-made reclamation of deserts for ecological reasons (biodiversity), farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.
Detailed explanation-3: -Desertification is the degradation process by which a fertile land changes itself into a desert by losing its flora and fauna, this can be caused by drought, deforestation, climate change, human activities or improper agriculture.
Detailed explanation-4: -Desertification is a process of soil erosion and land degradation. Deserts are typically areas covered in sand but desertification extends to mean any areas where land can no longer sustain plant and animal life.