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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
CONTROLLING BLEEDING : In this section, we will discuss methods of dealing with three types of bleeding: (1) Severe bleeding (2) Moderate and mild bleeding (3) Internal b
find maximum angle for which the light suffers tir at vertical surface
Folic acid has the following important physico-chemical properties: a) It is a yellow, spear-shaped crystalline substance. b) The compound is sparingly soluble in water.
Freezing by Contact with a Cooled Liquid: Immersion Freezing In this method, the food is immersed in low-temperature brine to achieve fast temperature reduction through direct
what is benzoin condensation and what are the results of it and the uses of this reaction
what is heart attack comes
perceived brightness
any example of the seven scientific method?
1. If the landfill had a compacted density of 600 Kg/m3 a refuse depth of 9 m (29.5 ft), a moisture content of 20% by volume, and a 1-m (3.25-ft)-thick clay cover with a 2% slope
Water extinguishers : Direct the jet at the base of the flame and keep it moving across the fire. Attack a fire which is spreading vertically at its lowest point and follow th
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