A. by using it to introduce new characters and develop main characters!
Answer:
The word "protracted" means lasting longer than expected, or unusually long, so what protracted most clearly means based on the context of the excerpt is how the time period of celestial motion studies must have lasted unusually long.
Answer:
School Starting
Explanation:
if this is to kill a mocking bird, which i'm almost certain it is, Scout is excited about school starting as she has never gone to school before.
They could die, cross-contamination from earth, e.t.c