Natural materials are those that come directly from nature, like wood from trees, cotton from plants, and metals from the earth. They are used in their natural form or with minimal processing.
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Transparency is the property of a material that allows light to pass through it. Materials like glass, clear plastic, and some types of crystal are transparent, allowing us to see through them.
Materials can be classified based on properties like strength, flexibility, transparency, and conductivity. For example, metals are strong and conductive, while rubber is flexible, and glass is transparent.
Uniform motion occurs when an object travels equal distances in equal time intervals.
A magnetic field can be visualized using iron filings or a compass. Iron filings sprinkled around a magnet align along the field lines, while a compass needle aligns itself with the magnetic field direction.
Plants and animals provide most nutrients, but not all. Plants offer vitamins, minerals, and fiber, while animals provide complete proteins and some nutrients like vitamin B12. A varied diet ensures all essential nutrients are obtained.
The Apatani tribe produces tapyo salt by boiling water from brine springs and evaporating it, creating a mineral-rich product. They make their own salt due to limited access to commercial salt and traditional practices.
Culinary practices refer to the methods and techniques used in cooking and preparing food. They encompass various aspects, including cooking styles, food preparation methods, and presentation, shaping the overall dining experience.
Wasting food is problematic as it squanders valuable resources, including time, money, and energy. It contributes to environmental issues like landfill waste and greenhouse gas emissions and reflects a lack of appreciation for food’s true value.
Coluthur Gopalan is renowned for his contributions to nutritional science, particularly in the field of food security and the development of the Indian recommended dietary allowances. He has significantly advanced nutrition research in India.