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Q. Do you know of any activity which may be polluting this water source?
Answer: The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes this fresh water source.
Communication Revolution: It is in this background, that communication revolution is being ushered in ou: country. In the recent years, the rural people who have access to T
Infectious diseases: Some of you may have heard about the great bubonic plague, a fatal disease of the blood, spread by fleas and respiratory secretions. It occurred in epid
Precautionary Measures Against Ionising Radiations The following guidelines are suggested for experiments using low activity radioactive materials: (1) Avoid skin contact
Observing sun spots Use the telescope that you made in a last experiment. Set it up so that it points directly at the sun and focus it so that a clear and bright image of the s
what is the speed of light
Explain the Constituents and Examination of Urine The quantity of urine in 24 hours in adult normal individual varies from 600 ml to 2500 ml. It is pale yellow in colour, hyper
how does our lungs work
Explain the Chronic Glomerulonephritis The repeated occurrence of acute glomerulonephritis, persisting proteinuria, hypertension and chronic renal failure may damage more and m
Carbon l4 with a half-life of 5,568 years is used to date a sample of wood. Sample has l/8 the carbon l4 contained in a living tree of same species. Approximately how old is specim
CONSTRUCTION STANDARDS SET BY BUREAU OF INDIAN STANDARDS : At the construction stage itself, the design of the laboratory buildings should be made in accordance with safety norms.
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