Introduction Any edible substance of plant or animal origin that provides nutritional benefits such as carbohydrates, fats, proteins, vitamins, or minerals to an organism when consumed is called Food. A meal that includes adequate amount of proteins, carbohydrates, fats, vitamins and minerals is called Balanced diet. A balanced diet should contain pulses, fruits, vegetables, milk,Continue reading “Chapter 15––>Improvement of Food Resources”
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Chapter 07––>Diversity in Living Organism
Introduction The nature is a boon to us. The part of earth in which living and non-living organisms exist is called the biosphere. It contains a huge variety of species living in it that interdepends on each other. The interrelationship of the species and their relationship with the environment to support life is called biologicalContinue reading “Chapter 07––>Diversity in Living Organism”
Chapter 11––>Work and Energy
Introduction In day-to-day life, we consider any useful physical or mental labor as work, which is being defined differently in science. Two conditions are need to be satisfied for work to be done in science :- A force should act on object. The object must be displaced. If either of these conditions does not satisfy,Continue reading “Chapter 11––>Work and Energy”
Chapter 12––>Sound
Introduction Have you heard the following sounds – Sitar, Violin, Veena, your favorite song playing in your iPod, temple bells, chirping of birds, vehicles horning in traffic, dogs bark, pressure cooker whistling, crackers bursting, rattling and breaking of objects etc. While some sounds may be pleasant and soothing, some could be annoying. In this chapter, we willContinue reading “Chapter 12––>Sound”
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