Prebiotic fibers are non-digestible parts of foods that promote the growth of beneficial bacteria in the gut. They serve as food for probiotics, the good bacteria, aiding in improving digestion, enhancing immune function, and potentially reducing the risk of chronic diseases. Prebiotics are found in foods like bananas, onions, garlic, leeks, asparagus, and whole grains. Unlike probiotics which are live bacteria, prebiotics are a form of dietary fiber that helps maintain a healthy gastrointestinal environment. Incorporating prebiotic-rich foods into one's diet can support overall health by maintaining balance and diversity of intestinal bacteria.

Diluting Chinese seal ink requires precision to maintain its integrity while reaching the desired consistency. Traditionally, Chinese seal ink, made from soot and oil, is quite thick. To dilute, start by adding a very small amount of clean water or a specialized thinner recommended for seal inks. Use a dropper for better control and add the liquid drop by drop, mixing thoroughly with a palette knife or a small spatula after each addition. It's crucial not to over-dilute; you aim for a consistency that allows the seal to leave a clear, sharp impression without bleeding on the paper. Test the ink on scrap paper as you go to ensure quality results. Remember, it's easier to add more liquid gradually than to repair overly diluted ink.

The setting process of resin differs based on the type used. For epoxy resins, heat is not required for the setting process but can speed it up and improve the final properties by reducing bubbles and enhancing clarity. Polyester and UV resins, on the other hand, do not generally require external heat to cure. However, they do need the right conditions: polyester resin requires a hardener, while UV resin needs exposure to UV light. External heat can be detrimental to these types by accelerating the reaction too quickly and potentially causing issues. Thus, while heating resin can be beneficial in specific scenarios, particularly for epoxy resin, it isn't a universal requirement for all resin types. It is essential to follow the manufacturer’s instructions for the best results.