Sculptures and cave paintings were a development of the Paleolithic period.
Answer:
They were made of sun dried mud bricks and decorated with colourful paint
Answer:
Place the needle at a low angle on the emery board and run it across a few times with some pressure. As you run it across, twirl the needle between your fingers so all sides of the needle are sharpened. Check using the fingernail test I detailed above if the needle is sufficiently sharpened.
Explanation: