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Sprinkler-based irrigation systems are claimed to be more efficient than gravity systems since they use less water to irrigate the same amount of land. In addition, it is said that they can be efficiently utilized both on sandy soil, and on hilly or uneven ground, neither 5 of which is true of gravity systems.
1. How many advantages sprinkler-based systems are suggested?
2. Which of the following may NOT be inferred from the passage?
3. Which of the following is claimed as an advantage for sprinkler based irrigation systems ?