Last seen: Jun 14, 2021
Agriculture is the primary activity that involves the cultivation of crops, fruits, vegetables, flowers and rearing of livestock.
Organic waste such as dead plant and animal material, animal dung and kitchen waste can be converted into a gaseous fuel called biogas. Biogas is esse...
Wind power is the fastest-growing energy source in the world. A wind turbine works the opposite of a fan. Instead of using electricity to make wind, a...
When power is generated from the force of moving water it is called Hydel power. Rainwater or river water is stored in dams and made to fall from heig...
Power resources can be classified into conventional sources and non-conventional sources of power.
The 3Rs stand for, reduce; reuse and recycle. Reduce - to use less Reuse - to put again into service without changing Recycle - to put again int...
Gold, silver and platinum are used in the jewellery industry. Copper is used in the coin industry and for making pipes and wires. Silicon obtained f...
Salt is a dietary mineral essential for animal life. It is composed primarily of sodium chloride. Salt is produced in different forms; they are unrefi...
Minerals occur in different types of rocks. They are Igneous rocks; Metamorphic rocks and Sedimentary rocks.
The process of taking out minerals from rocks buried under the earth’s surface is called mining. Mining can be classified into Open-cast mining and sh...
Minerals can be extracted by Mining; Drilling and Quarrying.
Minerals can be classified as Metallic and Non-metallic minerals. Metallic minerals are further divided into Ferrous and non-ferrous minerals.
Minerals are found in the earth and are naturally occurring substances. They are not made by man. They are found in rocks and water. They are chemical...
Advantages: Non-conventional sources of energy are usually inexhaustible. They do not pollute the environment. Nuclear power is emitted in large ...
Non-conventional power sources are those power sources that have come into use recently due to the depleting conventional resources and growing awaren...
Hydroelectricity is produced from the energy possessed by water falling from great heights. River water is stored in dams. When rainwater or river wat...
Minerals are important in many industries. Minerals used in gems are usually very hard. These are then set in varying styles of jewellery. Iron and co...
The mineral deposits in North America are found in three zones: The Canadian region in the north of the Great Lakes, the Appalachian region, and th...
Consider A = (x, 0); B = (2, -5) and C = (- 2, 9). AB = = AC = = Since both the distance are equal in measure, So AB = AC = Simpli...
(i) Let the points (- 1, -2), (1, 0), (-1, 2), and (-3, 0) be representing the vertices A, B, C, and D of the given quadrilateral respectively. AB =...