Jon- Your description of air and your definition of mixtures are good. However, we were asked why we believe that air is a mixture. In other words, we were asked for evidence. The sort of facts you cite were not discovered by reading textbooks but by doing real experiments.
Ingroup bias, sometimes known as in-group favoritism, in-groupâout-group bias or intergroup bias, refers to a pattern of favoring members of oneâs in-group over out-group members.This can be expressed in evaluation of others, allocation of resources and many other ways.ngroup bias, sometimes known as in-group favoritism, in-groupâout-group bias or intergroup bias, refers to a pattern of favoring members of oneâs in-group over out-group members.
Cultural Bias is interpreting and judging perceived through someone's own culture. In other words, a person may be biased towards someone else because they do not fit into that persons own culture, or they may be different.  The meaning of bias is prejudice that is against or in favor of a  person, thing or group compared with another in a way considered to  be unfair. 5 people found this useful. Notyouraveragedummy ...