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Revision Notes on Water: A Precious Resource Quick Facts 22 March is celebrated as World Water Day to bring awareness among the people about the conservation of water. 2003 was called as the International year of freshwater to bring awareness among
Read MoreWhat is light? Light is a radiation or a form of energy that our eyes can detect. Light enables us to view our surroundings. Light travels from one place to another in a straight line. Figure 1: Light always travels
Read MoreElectric CircuitsA continuous conducting path (consisting of wires, bulb, switch, etc.) between the two terminals of a cell or battery along with an electric current flows, is known as an electric circuit.e.g. take a cell having a positive terminal (+)
Read MoreRevision Notes on Motion and Time What is Motion? If an object keeps on changing its position with time, it is said to be moving or in motion. Motion can be of different types: Linear or straight in which the object travels
Read MoreAll the living organisms including plants and animals have the capability to produce new individuals during their lifespan. This process of producing a new organism from the existing organism (or the parent) of the same species is called reproduction. The
Read MoreIn unicellular organisms, the intake of food, water, oxygen and removal of waste material occur across the cell surface by the process of diffusion. Plants and animals are multicellular. They have a specific organ to perform specific functions. To perform
Read MoreRevision Notes on Respiration in Organisms Why do we respire? All the living organisms are made up of small microscopic units called the cells. These cells have different functions to perform in these organisms such as digestion, respiration, transportation and
Read MoreImportance of Soil Soil allows the growth of plants. It supplies water and nutrients that are required in the growth of plants. The soil is the main part of agriculture. Different types of soils support different kinds of crops. Without
Read MoreWinds – When the air moves in a flow in a particular direction it is called wind. Air Exerts Pressure Why a tin can with hot water when cooled down with freshwater distorts its shape? Figure 1 Air Exerts Pressure As
Read MoreThe weather of a place can be defined as the measure of its daily atmospheric conditions such as humidity, temperature, lightning events, rainfall Storms, snow and so on. Different elements of weather are: Rainfall Temperature Humidity Snowfall Storms Winds etc. Figure 1:
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