Well the best ways are to have great instillation plastic cover over that high quality paper board "the wall it's self". High quality primer, High quality paint.
They had sea walls and land walls to protect invaders from entering
Yes, the barriers that protect the walls in Kingdom Hearts Galaxy are filaments.
They protect the cell
because it protect them from strong breeze and rain and from phonemeana To protect themselves from people like you. Alternatively, walls are a requirement for roofs.
It takes food in and sends waste out, the cell walls protect it from the outside like the home's walls protect it from the outside.
they protect the cell from damage. only plant calls have cell walls.
massive walls and moats
by walls and guards with spears
buit the aurelian walls to protect rome
build walls around their cities?
Yes it was, so the walls to protect it.
Castles protect people by providing very high and durable walls to keep invaders away. They were highly successful until large siege engines were created to tear down the walls.