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344 Arrow-Puffin-4_Semester-1 SocialB. Fill in the blanks. 1. The uppermost layer of the Earth%u2019s surface is called .2. Red soil is red due to the presence of in it.3. The most important factor of soil is its .4. soil is formed from lava rocks.5. is the most fertile type of soil.Knowledge ApplicationA. Match the soil type with the area in which it is found.1. Red soil Rajasthan2. Laterite soil Arunachal Pradesh3. Desert soil Gujarat4. Black soil West Bengal5. Mountain soil Tamil Nadu6. Alluvial soil OdishaB. Answer the following questions in one or two sentences.1. How can you make red soil suitable for cultivation?2. What type of crops can be grown in alluvial soil?3. What is black soil formed from?4. Where do we find forest soil?5. What is soil erosion? How can we prevent soil erosion?6. What are the components of soil?7. How is soil formed?8. Write a short note on each of the following: (a) alluvial soil (b) black soil (c) red soil9. Write a short note on: (a) laterite soil (b) mountain soil (c) desert soil10. Write some ways of conservation of soil.