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Water Pollution
Water is one of the most essential requirements for the survival of all living organisms. Water is used for household, agricultural, industrial and recreational purposes. The water that is discharged after use is polluted with soluble, insoluble, toxic and innocuous matter as well as pathogens. At present, the pollution in our natural water sources such as rivers, lakes, estuaries is growing all over the world.
Q. Which kind of polarity do fat-soluble and water-soluble substances respectively have? Ans. Water-soluble substances are behave as polar molecules, i.e., they have e
Explain about the Obliques muscles The superior and inferior oblique muscles form an angle of about 51 0 with the optical axis. The oblique muscles produce cyclorotation becau
How is the human foetus expelled from the uterus of its mother: The total time required for the embryonic and foetal development is called gestation period which is usually
SULPHUR The major sources of sulphur are crucifers and animal proteins. Proteins present in pulses have little sulphur. Therefore, other vegetable proteins or crucifers must
MONOSACCHARIDES Simple carbohydrate monomers, which cannot be hydrolysed further into simpler or smaller subunits. Monosaccharides are generally colourless, crystallin
Q. How does synaptic transmission between neurons take place? The propagation of the action potential along the axon reaches the region immediately anterior to the presynaptic
Class of Crustacea - Ostracoda Generally called mussel or seed-shrimps, Ostracoda include both fresh water and marine forms. The small crustaceans, computing a few mm have the
What is Mega sporogenesis
Which of the following serves as an actuating signal, or as part of an actuating signal, in a positive feedback system? A. Blood plasma levels of PTH (Parathryroid Hormone).
Diagram of a cell surface membrane. State the width of a cell surface membrane. (i) On which side of the membrane, shown in Figure, X or Y, is the cytoplasm of the cell?
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