Evaporation is the process by which a liquid is vaporized from a solution, leaving behind a more concentrated residue. It is commonly used to prepare liquid, soft, and dry extracts from solutions by removing the solvent through heating. Evaporation is also employed to concentrate blood plasma, serum, enzymes, hormones, antibiotics, and other agents. The rate of evaporation is influenced by factors like temperature, time, moisture content, the type of desired product, and concentration of the solution.