Team is a group of people who work together

Team is a group of people who work together. It may be two or more people who communicate mutually because they have interests in common. From the beginning of time, people have used work groups to get things done and to generate new ideas. (Wheelan, 2005)
The characteristics of an active team will be able to the highest level for an extensive period of time and to complete the assigned task in the most efficient and effective manner and to the best of its ability.
The purpose, objectives and roles of a team could change from team to team. Anyhow some certain features will remain in a team that facilitates the team to achieve effective team performance.