Humans have a similar number, for example, all the people have needs. There is a sense of emotion, but at the same time, each person is different from the others in several different reasons, such as the shape of the body. Different hair colors also different ideas and emotion. Therefore, we could say that no one is the same, to lose everything. All men in the world, so there is a difference in both the body and the environment that are different and the difference is that the human person should understand and learn to understand human friends. We call it that diversity encompasses acceptance and respect. It means understanding that each individual is unique and recognizing our individual differences. These can be along the dimensions of race, ethnicity, gender, sexual orientation, socio-economic status, age, physical abilities, religious beliefs, political beliefs, or other ideologies. It is the exploration of these differences in a safe, positive, and nurturing environment. It is about understanding each other and moving beyond simple tolerance to embracing and celebrating the rich dimensions of diversity contained within each individual. Many times the difference cause problems. We need to study those problems and solve it. For example Gender, Experience and Ethnicity