Question 1 - both are overly greedy
question 2 - the author made the James character somewhat of a hoarder
1st : Somebody can fall out and drown
2nd : The dancer can fall and hurt her leg
3rd : The fish death rate may rise
4th : The shark may eat somebody
5th : The cat or whatever that is can be eating something with a deadly sickness
C faculty he teachs the class