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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?
How to prevent the erosion of topsoil Use the trays constructed for the experience above. (a) Fill the trays with loose soil and tilt everyone the similar amount. Make furr
illness expenditure on health
what is force?
HYGIENE : We all would agree that chemical hazards can be prevented to a certain extent by maintaining a good hygiene. Hygiene in this context can be discussed in the following th
how do some flower make there own food
Oil extraction : Extraction of oil from the prepared oilseeds can be done by one of the following methods: (i) traditional method: ghani, (ii) Improved methods:
Determine about the Plant nutrients The primary source of energy for photosynthesis in plants is the sun. A complete analysis of plants shows the presence of a large number of
Discuss main factors that influence mass movements. Ans) Things as if climate and food availability will make a big dissimilarity if it is too cold, too dry then people will re
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