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Meghna Thapar 5 years, 9 months ago
Policy is a course or principle of action adopted or proposed by an organization or individual.
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Yogita Ingle 5 years, 9 months ago
3a2 + 9a +6
= 3a2 + 3a + 6a + 6
= 3a(a + 1)+ 6 (a +1)
= (a + 1) (3a + 6)
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The State Government of Rajasthan passed the Sati (Prevention) Act, 1987 whereby the voluntary or forced burning or burying alive of widows, and the glorifying of such acts including the participation in any procession of Sati became punishable. This Act became an Act of the Indian Parliament in 1988 when the Commission of Sati (Prevention) Act, 1987 was enacted.
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Feedback mechanism is the mechanism of the body to maintain the levels of hormones in the body in the desired limits. An increase or decrease in the levels of the hormones triggers the feedback mechanism.
The body has two types of feedback mechanisms, positive and negative feedback mechanism.
Example:
Negative feedback mechanism:
Whenever there is a change in the normal state, the messages are sent to ‘increase’ secretions if there is a fall below normal or to ‘decrease’ secretions if there is a rise above normal to restore the normal body state. Such a mechanism is called a negative feedback mechanism.
The increase in the blood sugar level stimulates the secretion of insulin so that the sugar level is maintained. If the blood sugar level falls below normal, then it stimulates the secretion of glucagon. Glucagon stimulates the breakdown of glycogen to glucose, and thus, the normal sugar level is maintained.
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- A growth movement of a plant part in response to an external stimulus in which the direction of the stimulus determines the direction of response is called tropic movement.
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- The production of new organism from a single parent without the involvement of *** cells is called asexual reproduction whereas the production of a new organism from two parents by making use of their *** cells is called sexual reproduction.
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The chemical decomposition produced by passing an electric current through a conducting liquid is called electrolysis.
Take out carbon rods carefully from two discarded cells. Clean their metal caps with sand paper. Wrap copper wires around the metal caps of the carbon rods and join them to a battery. These two rods are electrodes.
Now, pour a cupful of water in a glass/plastic bowl and add a teaspoonful of salt or a few drops of lemon juice to water to make it more conducting. Immerse the electrodes in this solution. Make sure that the metal caps of the carbon rods are outside the water. Wait for 3-4 minutes. We will see that the bubbles of gases are produced at the two carbon electrodes. The formation of gas bubbles at the two carbon electrodes shows that a chemical change has taken place in water on passing electric current through it.
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Increased level of nutrient in the water bodies leads to algal bloom. The algae compete for space, food and oxygen and thus affects the survival of aquatic organism. Aquatic organisms may also die due to starvation and lack of oxygen supply.
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Viral Halvadia 5 years, 9 months ago
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