Tick the correct answer.
(i) Which one of the following is NOT a factor of soil formation?
(a) time (b) soil texture (c) organic matter
(ii) Which one of the following methods is most appropriate to check soil erosion on steep slopes?
(a) Shelter belts (b) mulching (c) terrace cultivation
(iii) Which one of the following is NOT in favor of the conservation of nature?
(a) switch off the bulb when not in use
(b) close the tap immediately after using
(c) dispose polypacks after shopping
Match the followings:
(a) Land-use (i) prevent soil erosion
(b) Humus (ii) land suitable for agriculture
(c) Rock dams (iii) productive use of land
(d) Arable land (iv) organic matter deposited on top soil
State whether the given statement is true or false. If true, write the reasons.
(i) Ganga-Brahmaputra plain of India is an overpopulated region.
(ii) Water availability per person in India is declining.
(iii) Rows of trees planned in the coastal areas to check the wind movement is called inter cropping.
(iv) Human interference and changes of climate can maintain the ecosystem.
