Final answer:
It is necessary to keep the course of the Mississippi River from changing too much due to disruptions to navigation, threats to communities, impacts on agriculture, and dependencies on a stable river course for human activities.
Step-by-step explanation:
It is necessary for human beings to keep the course of the Mississippi River from changing too much for several reasons. First, changing the course of the river disrupts navigation and transportation, making it difficult for ships and boats to travel along the river. Second, the river's natural course poses a threat to nearby communities as it can cause flooding and damage to infrastructure. Third, altering the river affects agricultural practices in the region, as farmers rely on a stable river course for irrigation and water supply. Lastly, human activities along the riverbanks, such as industries and cities, depend on a stable river course for their operations and economic activities.