Basically, a well is a hole drilled into the ground to access water contained in an aquifer. A pipe and a pump are used to pull water out of the ground, and a screen filters out unwanted particles that could clog the pipe. Wells come in different shapes and sizes, depending on the type of material the well is drilled into and how much water is being pumped out.
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Answer:
Social harmony is the living together of people of a particular social group with love, care, respect and brotherhood, regardless of their religion, region, caste, gender, colour etc.
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Your question: Which oceans have the greatest number of rivers flowing into them?
Your answer: Atlantic and the Indian ocean have the greatest number of rivers flowing into them.
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