Sifting is a process used to separate desired materials from unwanted ones by passing them through a mesh or screen. This technique is commonly applied in various fields, such as cooking, where it helps to remove lumps from flour, or in construction, where it is used to separate fine particles from larger debris. In agriculture, sifting can be used to separate seeds from soil or debris, ensuring that only the best seeds are planted. Additionally, in scientific research, sifting can help isolate specific substances from mixtures, aiding in experiments and analysis.