Identify the internal AND external conflicts experienced by the boys regarding returning home from Jackson Island.

This was answered before. Try to remember that internal conflict is turmoil within the character. External are forces that create stress from outside the character. So, Tom, Huck and Joe run away to Jackson Island.

Internal Conflict- Tom and Joe feel badly that people are missing them, money is being spent to find them, and Tom feels he has betrayed Aunt Polly.......

External- People will be angry if they come out; the island life is not very comfortable.....

Hopefully this makes it clearer. Just think along these terms. Good Luck!