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To show the impact of a raindrop on soil
Place a saucer or jar lid filled with soil on a piece of white paper. Fill a medicine dropper with water and hold it about a metre above the soil. Release water a drop at a time and get how much soil is splashed out on the paper. Place a clean sheet of paper under the saucer. Again free drops but hold an obstacle like as a pencil in the path of the drop to break the force of the raindrop. Do plants stop the wearing away of the soil in this way?
Controlling Air Pollution: Now let us see, how air pollution can be controlled. i) Photochemical smog-eliminating this would require large scale changes in life style
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Explain Vaginal Bacteria - External Defence Mechanism Vaginal bacteria: Certain bacteria normally live in the vagina. They produce lactic acid, which kills the bacteria. Hence,
When, in the geologic column, did dinosaurs become extinct at the Cretaceous-Tertiary boundary
Greenhouse effect: Scientists have reason to believe that air pollution. both due to carbon particles or soot and carbon dioxide would affect weather. A rise in surface temper
describe the factors which decide the broad area of scientific activity
all of these are examples of fossil fuel EXCEPT:coal,petroleum,corn oil or natural gas?
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