SELECT * FROM question_mgmt as q WHERE id=4471 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=49 AND chapterId=345 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th social-science-contemporary-india-ii Resources and Development answer the following questions in about 30 words

Question:

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.

Answer:

i) Maharashtra, Madhya Pradesh and Chattisgarh.
Some of the major crops grown on the black soils are cotton, wheat, jowar, linseed, Virginia tobacco, sunflower and millets. Rice and sugarcane are equally important where irrigation facilities are available large varieties of vegetables and fruits are also successfully grown on the Iblack soils.

ii) Alluvial soil is found in the river deltas of the eastern coast.

The three main features of alluvial soil area:

   a) Silk, clay, gravel and sand the main constituents of alluvial soil.
   b) Alluvial soils are very fertile. Sugarcane wheat and paddy are the main crops grown in this soil.
   c) According to age, the alluvial soil is classified as Bangar (old alluvial) and Khadar (new alluvial).

iii) Steps can be taken to control soil erosion in the hilly areas are:
        a) Contour ploughing : This refers to ploughing along contour lines.
        b) The Making use of Terrace farming technique by cutting the rock layers to reduce the flow of rivers.
        c) Plugging of gullies to prevent gully erosion.

iv) 

Biotic Resources Abiotic Resources

  • Biotic resources include all the living things present in an ecosystem.

Eg. Human beings, flora and fauna etc.
  • Abiotic resources include all the non living things i.e. physical conditions and chemical factors that influence an ecosystem.

    Eg. Sunlight, water temperature, metals etc.


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