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Human nature is a phrase that can not truly exist; human nature implies that everyone is the same and that everyone has the same urges. However, there is always at least one exception to every supposed rule of human nature. I think that certain elements of “human nature” can be changed. However, most people do not want to BE changed. Most people like things the way they are and shy away from change and anything that will upset their lifestyle. To change people will have to make a concerted effort to stop destroying the environment and to stop eating meat, being an omnivore is too much a part of human nature. There are people who do not eat meat, but, as an ex-vegetarian, I can say that it is very difficult to not eat meat; your instincts still draw you towards to it.