Dams and canal networks developed for irrigation purposes in Pakistan and may other countries create the problem of:
Correct answer: D. Salinity and water logging
- A. Salinity and soil erosion
- B. Soil depletion and water logging
- C. Soil erosion and depletion
- D. Salinity and water logging
Explanation
Irrigation without adequate drainage raises the water table and leaves salts behind as water evaporates, producing the linked problems of waterlogging and salinity. Soil erosion and depletion are not the characteristic primary effects described here.
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