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Are and Perimeter Calculation By Aditya Class 8

Are and Perimeter Calculation Description Area and perimeter, in Maths, are the two important properties of two-dimensional shapes. Perimeter defines the distance of the boundary of the shape whereas area explains the region occupied by it.  Area and Perimeter is an important topic in Mathematics, which is used in everyday life. This is applicable to …

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Solar System By Shivin Class 7

   Solar System   Description The Solar System was formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. Over time, the cloud formed the Sun and a protoplanetary disk that gradually coalesced to form planets and other objects. That is the reason why all eight planets have an orbit that lies near the same plane. In the …

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Evaporation Project By Surya Class 8

  Evaporation Project   Description Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.[1] High concentration of the evaporating substance in the surrounding gas significantly slows down evaporation, such as when humidity affects rate of evaporation of water.[2] When the molecules of the liquid collide, they transfer energy to each other based on how they collide. …

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Layer of Atmosphere By Samridhi Class 8

Layer of Atmosphere Description The atmosphere of Earth is composed of nitrogen (78 %), oxygen (21 %), argon (0.9 %), carbon dioxide (0.04 %) and trace gases.[2] Most organisms use oxygen for respiration; lightning and bacteria perform nitrogen fixation to produce ammonia that is used to make nucleotides and amino acids; plants, algae, and cyanobacteria use carbon dioxide for photosynthesis. The layered composition of the atmosphere minimises the harmful effects of sunlight, ultraviolet radiation, solar wind, and cosmic rays to protect organisms from genetic damage. The current composition of …

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Respiratory system By Vedanshi Class 8

Respiratory System Your respiratory system is the network of organs and tissues that help you breathe. This system helps your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood. Common problems include allergies, diseases or infections. What is the respiratory system? …

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