Which one of the following is NOT in favour of the conservation of nature?

a. Switch off the bulb when not in use

b. Close the tap immediately after using

c. Dispose poly packs after shopping

Which one of the following is NOT a factor of soil formation?

a. Time

b. Soil texture

c. Organic matter

Which one of the following methods is most appropriate to check soil erosion on steep slopes?

a. Shelter belts

b. Mulching

c. Terrace cultivation

Match the following:

a. prevent soil erosion

b. narrow zone of contact between lithosphere, hydrosphere and atmosphere

c. productive use of land

d. organic matter deposited on top soil contour ploughing.

i. Land use

ii. Humus

iii. Rock dams

iv. Bio-sphere

State whether the given statement is true or false. If true write the reasons.

i. Ganga-Brahamputra plain of India is an overpopulated region.

ii. Water availability per person in India’s declining.

iii. Rows of trees planted in the coastal areas to check the wind movement is called intercropping.

iv. Human interference and changes of climate can maintain the ecosystem.