Your environment isn't just the air you breathe and the food you eat, though; a big part of your environment is culture. Culture is made up of the common things that members of a community learn from family, friends, media, literature, and even strangers. These are the things that influence how theylook, act, and communicate. Often, you don't even know you're learning these things because they become second-nature to you — for instance, the way you shake hands with someone when meeting them, when you eat your meals each day, the kind of things you find funny, or how you view religion.