Help questions (spoiler)

i cant watch the movie right now and i have a few questions to answer id like any one who knows to help thanks

1.what is dr campell big discovery?
2.what was the important piece of information that mad Dr.crane not so exicted
3.Dr campbell is call Medicne man by the tribe for what reason?
4.what happend to the orignal Medince man
5.why does campbell tell Dr cran to whatch out for urine whens she in the water?
6.why is dr crane acting wierd on the way to see the other medince man
7. what happens when they go to see the other MM
8. how was the problem solved with dr campbells medical discovery
9. what happedn to the forest/flowers