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  Manners Manners are the unenforced standards of conduct which demonstrate that a person is proper, polite, and refined. There are two(2) types of manners. They are good manners (etiquette) and bad manners. Good Manner's (etiquette) Good manners refers to the accepted ways of reacting or behaving in a community or society. EXAMPLES OF GOOD MANNERS 1. Apologising for wrong doings. 2. Tyding up tables after meals. 3. Putting the interest of others first. 4. Paying attention to how you carry your self.  https://youtu.be/4mI4b-F9j7I

What is diffusion Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration .