Target
Because the ink absorbs deeper into the paper than pencil does.
If you mean the erasers that have a soft side and a hard side, it is because the soft side is designed to erase lead or graphite from a pencil and the hard side is for erasing ink.
Erasers can erase lead. Although, rubber can erase lead, too; erasers are made of rubber. You can use a rubber ball to erase writing from a pencil.
the erasers are normal the ink is special it has about 80% graphite
one erases pencil marks and the other erases pen ink
latex
Yes, we can erase pencil marks with rubber because erasers are made out of rubber
They won't remove ink unless it is eraseable ink.
To erase something another term to rub out something.
Gomu are cheap shaped erasers that don't erase anything. Plus they are 5$ each.
becauase when they make mistakes they need to erase it