Crus example sentences

The amount of carbon present in the earth's crust and in the atmosphere is quite meagre.But what is the soil and how is it formed? The outermost layer of our Earth is called the crust and the minerals found in this layer supply a variety of nutrients to life-forms.Sugarcane crushing was earlier done with the help of bullocks, but people prefer to do it by machines these days.These were crushed into the earth, perhaps by earthquakes or volcanic eruptions.Petrol, diesel and kerosene oil are obtained by the fractional distillation of petroleum found under the earth's crust.According to this theory, the crust (upper part) of the earth has been formed out of seven major and some minor plates.The elements in the earth's crust are rarely found exclusively but are usually combined with other elements to make various substances.The outer crust of the Earth is called the lithosphere.In 1831, an armed rebellion against Russian rule took place which was ultimately crushed.About 98 per cent of the total crust of the earth is composed of eight elements like oxygen, silicon, aluminium, iron, calcium, sodium, potassium and magnesium (Table 1), and the rest is constituted by titanium, hydrogen, phosphorous, manganese, sulphur, carbon, nickel and other elements.The total volume of workable mineral deposits is an insignificant fraction i.e. one per cent of the earth s crust.The crustal rocks (igneous, metamorphic and sedimentary) once formed may be carried down into the mantle (interior of the earth) through subduction process (parts or whole of crustal plates going down under another plate in zones of plate convergence) and the same melt down due to increase in temperature in the interior and turn into molten magma, the original source for igneous rocks.The convectional currents split the crust into a number of pieces, thus leading to the drifting of the Indo-Australian plate after being separated from the Gondwana land, towards north.There are at least 2,000 minerals that have been named and identified in the earth crust; but almost all the commonly occurring ones are related to six major mineral groups that are known as major rock forming minerals.Antennal glands or green glands perform the excretory function in crustaceans like prawns.