Despondence<span> means being extremely unhappy,grumpy and dull. It is extremely being annoyed and frustrated to anything that occurs.For example a person becomes despondent because of usual failures . </span>Exuberance<span> means being excitedly happy.That is extreme happiness in everything happening in life.</span>
The first passage presents factual information about the Mississippi River, while the second passage simply uses the Mississippi River for plot points and setting.