Test anxiety boost blood levels and heart beat. A slight amount can be positive as more oxygen is delivered to your brain.
Because it simulates a word-of-mouth recommendation. In addition, a word of mouth promotion is important for every business as each contented customer can ox dozens of new ones your way. The word of mouth is the transient of information from an individual to individual by the oral message which could be as simple as influence somebody the period of a day.
Because the chromosomes need to line up
