Soil as an Important Resource
Soil as an Important Resource
Soil: The thin layer of grainy substance covering the surface of the earth is called soil. It is closely linked to land. Landforms determine the type of soil. Soil is made up of organic matter, minerals and weathered rocks found on the earth. This happens through the process of weathering. The right mix of minerals and organic matter make the soil fertile. Factors of soil formation: the nature of the parent rock and climatic factors. Others factors are the topography, role of organic material and time taken for the composition of soil formation. All these differ from place to place.
· Topsoil (A): The layer is dark in color, has a fine texture, has a high content of organic matter (for humus), and is vital for plant growth.
· Subsoil (B): This is the layer just below the topsoil; it consists of sand, silt and clay, but has only minor amounts of organics matter.
· Parent Material (C): This horizon usually consists of unconsolidated rock material from which the A and B layers have been formed. This zone has no dose it have any soil structures.
· Bedrock (R or D): This layer lies at some depth below the C horizon and consists of solid rock.
Factors of Soil formation:
· Parent rock: determines colour, texture, chemical properties minerals, content, and permeability.
· Relief: altitude and slope, determine accumulation of soil.
· Flora, fauna and micro- organism: affect the rate of humus formation.
· Climate: temperature, rainfall influence rate of weathering and humus.
Time: determines thickness of soil profile
Which factor is not responsible for the formation of soil ? | |||
| Right Option : C | |||
| View Explanation | |||
On the basis of area, what is the correct descending order of India's soils - | |||
| Right Option : C | |||
| View Explanation | |||
What is referred as the breaking up and decaying of exposed rocks by the ? | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
