How does Golding explore the development of the children and their relationship with the island? Please could you help me answer this questions as...

I hope that you read at least some of this terrific book!
:)  Golding starts his novel with the children being stranded on the island.  As they
begin to figure out how to survive, they change from what they were when they first
landed.   Their relationship with the island is one of survival -- yet, their survival
ultimately depends less on the island than on their relationship with each other. 
Several aspect of the island itself are very important:  1.  the lagoon where they meet
and discuss and swim and play, 2.  the fruit which is easily attainable, but which Jack
insists is not enough, and 3.  the presence of the pigs.  What parts of the island do
you think are innocent?  Is the pig's head on a stick part of the island or part of the
boys?  Does the island change or do the boys change?  Is the fire at the end of the
novel belong to the island or to the boys?