Chapter 18- Into The Wild

What evidence does Krakauer find that suggests Chris was ready to re-enter society?
Included a passage by Dr. Givago and left a note.
What does Krakauer think actually killed Chris?
The wild potato seeds.
Why does Krakauer think Chris could not excrete poison from his body?
He didn't have enough food in his body.
What is significant about August 5?
100 days in the wilderness
August 12, Chris left the bus to forage for berries. What did the note he left on the door say?
A desperate plea. Signed with his real name.
What is so poignant about the final photograph Chris took of himself holding his good-bye note?
He was so thin yet he had a smile on his face.