In "To Kill a Mockingbird," Nathan Radley fills the knot hole of the oak tree with cement to prevent Boo Radley from communicating with the children by leaving small gifts. This action is a way to isolate Boo further and maintain his seclusion.
Nathan Radley, Boo's older brother
an oak tree
It appears you may be referring to the character Bob Ewell from "To Kill a Mockingbird" by Harper Lee, not a character named Nathan. Bob Ewell, in the story, is seeking revenge on Atticus Finch for exposing the truth in court. Bob tries to harm Atticus's children, Scout and Jem, by attacking them near a tree. Atticus shoots and kills Bob Ewell to protect his children.
Scout finds the gifts in the knothole in Chapter 7 of "To Kill a Mockingbird."
gum
boo radley
In "To Kill a Mockingbird," the knothole in the tree is cemented up by Nathan Radley, Boo Radley's brother, as a way to prevent Boo from communicating with the children. This action symbolizes the Radley family's attempt to isolate Boo from the outside world and maintain their reclusive lifestyle.
a key
Yes.
Boo Radley secretly placed them there.
it represents jem's childhood
Tree and flowers