Q1. What was the main source of irrigation in old times?
Answer: Rain water and wells were the main source of irrigation in old times.
Q2. How is ground water affected by the cultivation of paddy?
Answer: Cultivation of Paddy crops needed lots of water. Due to this ground water level has been falling rapidly.
Q3. What is the main source of irrigation in Punjab, now-a-days?
Answer: Tubewells are the main source of irrigation in Punjab.
Q4. Write any one way to conserve water at home.
Answer: We can wash the utensils with the waste water of RO filter.
Q5(a) What measures should be adopted to minimise the use of water in agriculture?
Answer: We should plant crops that require less water as guar, oats, millet , gram etc. We should install fountains to irrigate the crops.
(b) What is the effect of submersible pumps on the use of water in houses?
Answer: Due to this, ground water level has been falling rapidly. We are not using water wisely. We waste a lots of water.
(c) Why can we not use water of ocean?
Answer: Many Unwanted salts are dissolved in sea water, it is not fit for direct consumption.
(d) What is the proper way of using water while brushing/bathing?
Answer: We should use Bucket and mug and should not let the tap turned on.
No comments:
Post a Comment