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Ask QuestionPosted by Jyoti Chauhan 5 years, 6 months ago
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Yogita Ingle 5 years, 6 months ago
A silkworm can find his female moth from many kilometres away by her smell.
Posted by Sujit Goswami 5 years, 6 months ago
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Meghna Thapar 5 years, 6 months ago
Fibrinogen is a specialized protein or clotting factor found in blood. When a blood vessel is injured, thrombin, another clotting factor, is activated and changes fibrinogen to fibrin.
Posted by Dinesh Joshi 5 years, 6 months ago
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Posted by Puspa Lata Biswal 5 years, 6 months ago
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Franklin Gerald 5 years, 6 months ago
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Posted by Shivram Farkale 5 years, 6 months ago
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Meghna Thapar 5 years, 6 months ago
- Irrigation: All the crops need water for their growth which they absorb from the soil. The process of supplying water to the crop plants in the fields is called irrigation. The time and frequency of irrigation varies from crop to crop and season to season. Irrigation is necessary to provide moisture for the germination of seeds. It is also necessary for the absorption of nutrient elements by the plants from the soil. Crops are supplied water for irrigation from different sources like rivers, canals, wells, dams, ponds and lakes.
Traditional Methods of Irrigation:
The various traditional methods of irrigation are:
- Moat method (Pulley system)
- Chain pump
- Dhekli
- Rahat (Lever system)
The human labour or cattles are used to lift water in traditional methods of irrigation. These methods are cheaper but less efficient so these are not used now-a-days. These days pumps are commonly used for lifting water. The pumps are run by electricity, diesel, biogas or solar energy.
Modern Methods of Irrigation:
The modern methods of irrigation help us to use water economically. The two main modern methods of irrigation are:
- Sprinkler system – In sprinkler system of irrigation, a main pipe is laid in the fields to which perpendicular pipes are joined at regular intervals. When water from a tube-well is allowed to flow through the main pipeline under pressure with the help of a pump, it escapes from the rotating nozzles and gets sprinkled on the crops. This method of irrigation is more useful for the uneven land and sandy soil where sufficient water is not available.
- Drip system – In the drip system, there is a network of narrow pipes with small holes in the fields. When water falls through these narrow pipes, it falls drop by drop at the position of the roots of the plants. There is no run-off or wastage of water. This technique is the best technique for watering fruit plants, trees and gardens.
Posted by Shailja Chauhan 5 years, 6 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
Human digestive system which is also known as the alimentary canal is a muscular tube which extends from the mouth to the ****. The parts of the human digestive system include – mouth, oral cavity, teeth, oesophagus, pharynx, stomach, small intestine, large intestine, and ****.
Posted by Savita Chourasia 5 years, 7 months ago
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Posted by Savita Chourasia 5 years, 7 months ago
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Posted by Sujal Routray 5 years, 7 months ago
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Posted by Jyoti Kumari 5 years, 7 months ago
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Meghna Thapar 5 years, 7 months ago
Families have changed over the past thirty years. With marriage rates down and divorce rates up, there are an increasing number of children growing up in sole-parent or reconstituted families. Sole-parent families are of particular concern due to the high incidence of poverty among such households.
Posted by Anshu Manav 5 years, 7 months ago
- 1 answers
Meghna Thapar 5 years, 7 months ago
Smell is an important sense as it can alert us to danger like gas leak, fire or rotten food but also is closely linked to parts of the brain that process emotion and memory. Smell is vital for survival of most humans and animals as it enables them to track food and water, find a mate and even communicate.
Posted by Anushka Pandey 5 years, 7 months ago
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Posted by Thavasu Mani 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Without cows and buffaloes, there was no cow dung to be used in the fields as fertilizer. Therefore, Hasmukh was forced to buy expensive fertilizers.
Posted by Franklin Gerald 5 years, 7 months ago
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Posted by Sandhya 8 A 5 years, 7 months ago
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Posted by Antra Singh 5 years, 7 months ago
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Ramu B 5 years, 7 months ago
Posted by Ramu B 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Gadsisar lake is an artificial lake in Jaisalmer. It is located in the southern part of the city. Rawal Jaisal was the founder of the lake.
Posted by Ramu B 5 years, 7 months ago
- 4 answers
Yogita Ingle 5 years, 7 months ago
Neil Alden Armstrong was an American astronaut and aeronautical engineer and the first person to walk on the Moon.
Posted by Ramu B 5 years, 7 months ago
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Posted by Saksham Sigotiya 5 years, 7 months ago
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Pawan Ram 5 years, 7 months ago
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Baani Arora 5 years, 6 months ago
1Thank You