Soil Science

In low-rainfall areas, huge shifting sand dunes are commonly found, particularly near human habitations. Techniques of afforesting the shifting dunes needed to be implemented. These techniques consist of___________?

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In low-rainfall areas, huge shifting sand dunes are commonly found, particularly near human habitations. Techniques of afforesting the shifting dunes needed to be implemented. These techniques consist of___________?

A. Treatment of shifting sand-dunes by fixing barriers in parallel stripes or in a chess-board design, using the local shrub material starting from the crest of the dunes to protect the seedlings from burial or exposure by the blowing of sand.
B. Protection against biotic interference
C. Both a & b
D. None of these

Pakistan being predominantly an arid and semiarid country, In addition to agricultural productivity losses and increasing poverty, desertification results in significant reductions in _________?

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Pakistan being predominantly an arid and semiarid country, In addition to agricultural productivity losses and increasing poverty, desertification results in significant reductions in _________?

A. Contributing to global warming
B. Carbon storage in soils
C. loss of biodiversity
D. All of these

International Day for Biological Diversity – 22 May The United Nations has proclaimed May 22 The International Day for Biological Diversity (IDB) to increase understanding and awareness of biodiversity issues.