Answer the following questions in about 30 words.
(i) Name three states having black soil and the crop which is mainly grown in it.
(ii) What type of soil is found in the river deltas of the eastern coast? Give three main features of this type of soil.
(iii) What steps can be taken to control soil erosion in the hilly areas?
(iv) What are the biotic and abiotic resources? Give some examples.
(i) Maharashtra, Madhya Pradesh and Chhattisgarh
Black soil is ideal for growing cotton and sugarcane.
(ii) Alluvial soil
a) Alluvial soils are very fertile.
b) As it has more kankar nodules, old alluvial is less fertile than new alluvial.
c) They are ideal for growing sugarcane, wheat and paddy.
(iii) In the hilly areas, soil erosion can be controlled b y ploughing across contour lines, making use of terrace farming techniques and using strips of grass to check erosion by wind and water.
(iv) Biotic resources are composed of living things, and are derived from the biosphere, e.g., human beings, fisheries and livestock.
Abiotic resources are composed of non-living things, e.g., metals and rocks.