I have not read to kill a mocking bird. sorry
He is saying to not judge a person before knowing them properly. To understand the perpectives of people that face things like discrimination and not to have bad opinions on them.
Answer:
1. A precious light stones consisting of light bluish green variety of beryl.
2. Artificial pond.
3. Breathing apparatus used by divers.
4. water, saliva,tears, rain.
Which scene change is the question about specifically?