Answer:
To add suspense and keep readers engaged
Answer: Simply because he believes that someone has to fight for Tom, and no one else would do it.
Explanation:
Atticus was not only defending Tom Robinson in the case, but also against all the racist people who believed he was guilty just because he had coloured skin. Atticus was trying to show her daughter that some causes, though lost, should be defended.
Answer:
A conscience is an inward sense that helps us to become better people. It is like having a different person with us analysing and evaluating what we are doing, intend to do or what we have done and judges our actions as to whether they are good or bad.