Q51. ________________ is dividing a slope into several flat fields to control rapid run of water. It is practised mostly in hilly areas.
Q52. When Ploughing is done at right angles to the slope allows the furrows to trap water and check soil erosion by rain water is called _____________
Q53. Conservation and management of water is essential for the survival of ________________
Q54. Which of the following activity will help in Water Conservation?
Q55. Conservation of resources or energy means ____________
Q56. Which of the following actions can help us to save energy?
Q57. Food is stored in _______________ on large scale and in ___________________ at home.
Q58. _________________ means the retention of existing forest or the creation of new forest at the levels prescribed by the State or local authority.
Q59. Which methods of cooking uses less energy?
Q60. ________________ is defined as ‘development that meets the needs of the present without compromising the ability of future generations to meet their own needs.