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- Sieving to separate heavy material
- Blowing to separate heavy from the lighter material
- use of magnet to separate metallic objects
Solid mixtures can be separated through vibration (as in a bin where heavier objects rises to the top and smaller objects sink to the bottom), with magnetism in certain metallic objects, with the use of sieves, wind blows lighter objects (heavier objects are retained), and you can dissociate salts in liquids and rinse away, and you can separate different grains with your fingers or with the help of tweezers or something else. You could use the help of bacteria, or maggots or similar insects to eat away organic material.
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