Answer:Macro factors that can affect a business unit include changes in tax,demographic change,,policies,economic change and trade barriers.
Micro factors include customers, competitors,employees and social media.
The major challenge organisations are faced with is that the management is not in control of these enviromental factors rather these factors affect the operation of the business unit.For an organisation to thrive,it needs to fit in into these enviromental factors.
So every decision made by the management must be based on the changes affecting the business enviroment.
Explanation: