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Yogita Ingle 5 years, 7 months ago
The following are five important measures taken to prevent soil erosion and ensure soil conservation:
- Terrace Farming - On hilly slopes, terraces act as bunds and prevent the soil from being washed away by running water. Terrace farming is practiced with successful results in Japan, South-East Asia and the USA.
- Shelter Belts - Peasants plant trees in several rows to reduce wind erosion. They are called ‘wind breaks’.
- Contour Ploughing - Ploughing along contours on a slope prevents soil being washed away by rains or by surface run off. Contours act like bunds. Terraces are leveled into step-like small fields with even slopes. Contour ploughing is common in countries like Japan, China and some of the South-East Asian countries.
- Strip Cropping - In this system, crops are grown in alternate strips of land in order to check the effect of the winds.
- Construction of Dams - Rivers are known to cause soil erosion. Dams are built in the upper course of the rivers in order to control the erosion of soil.
Posted by Shova Davi 5 years, 7 months ago
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Mansi Mishra 5 years, 7 months ago
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Posted by Monoranjan Tripura 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Relief, nature of parent rock or bedrock, climate, vegetation and other forms of life, especially decomposers, and time are important factors in the formation of soil. Weathering of the parent rocks due to climatic factors like change of temperature, wind and frost action and rainfall and natural forces like action of running water, wind, glaciers etc., lead to disintegration of rocks.This leads to the formation of soil. The four most important factors of soil formation are thus :
(i) Relief determines the nature of weathering and erosion.
(ii) Climate determines the rate and factor of denudation of the rocks and influences weathering and erosion.
(iii) Nature of the parent rock determines the colour, texture and mineral content of the soil.
(iv) Time determines maturity of the soil, usually it takes millions of years to form soil upto few cms in depth.
Posted by Monoranjan Tripura 5 years, 7 months ago
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Posted by Monoranjan Tripura 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
In Punjab and Haryana, the net sown area is more than 80% of the total land in the state. On the other hand, it is less than 10% in Arunachal Pradesh, Mizoram, Manipur and the Andaman and Nicobar Islands. 3.38% of the total land is used for grazing, while the remaining lands are fallow and waste lands. In some of these states, the proportion of net sown is low because they are covered by dense tropical forests. The fertility of the soil is not suitable for cultivation. They receive heavy rainfall which is adverse for the cultivation. Added to this, these areas are backward and the farmers are very poor and hence they lack technology method of farming. Therefore, the net sown area differs from state to state.
Posted by I Am Not Pro 5 years, 7 months ago
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Mansi Mishra 5 years, 7 months ago
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Helper . 5 years, 7 months ago
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Akshita Singh 5 years, 7 months ago
Helper . 5 years, 7 months ago
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Jatin Neelam 5 years, 7 months ago
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Diya Verma 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Resistor is defined as: A passive electrical component with two terminals that are used for either limiting or regulating the flow of electric current in electrical circuits.
The SI unit of resistor is Ohm.
Posted by Lakshmichaitanya Avula 5 years, 7 months ago
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Posted by Mamta Rana 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
An occupational hazard is a disease which we get due to our occupation. An example is the sorters disease .People working in the sorters departmnt ( in the factory where wool is sorted ) are infected by this bacterium called anthrax. which causes this fatal Occupational hazard is the term used for risk or the consequences involved with a particular occupation.
Mostly mental stress and the physical risks are encountered while working with industries. Physical risks may involve any disease or injury whereas, mental stress can be due to work pressure. It is the responsibility of company to take proper care of its employees & their health.
Some examples of the occupational hazards are:
Excessive noise and heat are commonly found problems in industries, which can affect the hearing of workers.
In chemical industries, employee deals with harmful and dangerous chemicals which can burn their skin, also their powerful smell can cause breathing problems.
Posted by Anshit Bathla 5 years, 7 months ago
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Akshita Singh 5 years, 7 months ago
Vishav Sharma 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
The rate at which electric energy is dissipated or consumed in an electric circuit is called electric power. It's SI unit is Watt (W). power = work done / time taken. we know that work done by current I when it flows for time T under potential difference V is given by : W = V*I*T joules.
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