young, having lived or existed for only a short time., touch, to bring a bodily part into contact with especially so as to perceive through the tactile sense, double, consisting of two equal, identical, or similar parts or things., trouble, difficulty or problems., echo, a sound or sounds caused by the reflection of sound waves from a surface back to the listener., chemist , a person engaged in chemical research or experiments., chemical , relating to chemistry, or the interactions of substances as studied in chemistry., scene, the place where an incident in real life or fiction occurs or occurred., scenery , the natural features of a landscape considered in terms of their appearance, especially when picturesque., science , the careful study of the structure and behaviour of the physical world, especially by watching, measuring, and doing experiments., scientific , based on or characterized by the methods and principles of science..

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