An irrigation system “The Karez” is practiced only in:

🧠 Explanation:

The Karez irrigation system, unique to Balochistan, Pakistan, is an ancient method of channeling groundwater through underground tunnels to arid regions for farming. This sustainable technique supports agriculture in water-scarce areas, preserving resources and boosting crop yields. For those studying environmental science or regional history, the Karez system showcases traditional ingenuity in water management, offering lessons in sustainability and adaptation to challenging climates, particularly in arid regions like Balochistan.