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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 furrows with a stick running up and down the hill in single box and across the hill in the other box. Sprinkle each the similar amount. Observe the erosion in every case and the run-off water.
(b) Again fill the trays with loose soil. Water them unless there are well-defined gulleys formed from the running water. Now block the gulleys at intervals with little stones and twigs. Again water and observe the effect of blocking the gulleys
what is cell
Explain about the Alluvial soils Alluvial soils are characterised by their extreme depth, often several hundred feet, and a grey or greyish brown colour. Their texture varies
what are the organs of respiration in the lower form of animals?
Explain the Creatinine Clearance Test It determines how efficiently the kidneys are clearing creatinine from the blood and serves as an estimate of kidney function. It compare
Diagnosis and Prognosis: The diagnosis and prognosis of disease were done directly by seeing, hearing, smelling and touching all external human organs and human waste and of
what would i need to do to achieve a 7C in science , KS3??
The Moon, the Earth's Companion What do you norrqally observe about the Moon? Itshinesbrightest, whenever present in the night sky. It seems to go through phases and it seems t
1. The composition of solid waste from a residential community is as follows: Component Percent by weight Combustibles ---
What are the functions of insulin? 1. Promotes glucose transport into all cells of the body except brain. Rapid transport of glucose into the cells decreases the blood glucose
QUESTION 1 (a) What are the different methods of aquaculture? (b) How do you differentiate between an oligotrophic pond and a eutrophic pond? (c) Briefly describe the lif
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