A) The scientific name is used because of language barrier. It is a universal language that scientists can communicate with, without needing a translator. Typically in Latin
B) Many characteristics are shared by animals in the same family and it helps with research. Example: Grouping insects due to their thorax and the amount of legs they have. Spiders all share similar characteristics and so it helps build a basis for newly discovered species
C) Helpful to differentiate in groups and be more specific in how they are similar. While mammals all share basic characteristics monkeys and dogs are very different
