Chapter 6. Polymer
Chapter 6. Polymer. Introduction: In our daily life different types of polymer substances are closely related. Some of them are natural while others are synthetic. Some of the polymer substances […]
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Chapter 6. Polymer. Introduction: In our daily life different types of polymer substances are closely related. Some of them are natural while others are synthetic. Some of the polymer substances […]
» Read moreChapter 5. Light for Sight. The necessity of light is unlimited in our daily life. If we close our eyes we cannot see anything. Again in a completely dark place, […]
» Read moreChapter 4. Starting a New Life. It is thought that life originated on the earth about three hundred and fifty crore years ago. The climate of the world then was […]
» Read moreChapter 3. All about the Heart. The blood circulatory system is one of the most vital systems in human beings and other higher animals because this system supplies nutrition all […]
» Read moreChapter 2. Water for Life. Life is the other name of water. We obtain water from different sources. The sources of such an important resource are being polluted in many […]
» Read moreChapter 1. Healthy Life, Better Living. We cannot live without food. Regularly several types of food are necessary for the growth and development of body, repair, and replacement of worn-out […]
» Read moreChapter 7. Family Farming. Bangladesh is an agriculture-based country. Agriculture is the key factor to run its economy. Farmers of this country maintain agricultural farms since the ancient period. Farmers […]
» Read moreChapter 6. Agricultural Co-operatives. Doing any work in a group to achieve similar objectives is called cooperative. For necessary capital collection the members of the co-operatives can perform agricultural works, […]
» Read moreChapter 5. Afforestation. Plantation in the forest land, taking care and maintenance of them according to the scientific method is called afforestation. Through afforestation, maximum forest materials are produced. The […]
» Read moreChapter 4. Agricultural Production. Agricultural production means the production of various field crops, horticultural crops, medicinal plants and rearing of livestock and poultry, etc. It is necessary to increase agricultural […]
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