The difference between petroglyphs and cuneiform is:
petroglyphs are pictures carved in stone and cuneiform is writing on clay tablets.
petroglyphs are symbols in caves and cuneiform are symbols on papyrus.
petroglyphs are found in a small area of egypt and cuneiform is found all over the world.
petroglyphs are an early form of writing and cuneiform is a later form of writing.

Petro glyphs are the rock carvings made on a stone to shape an image on it. It was worldwide rock art and many inscription and depiction of images are made on a stone. Petro in Greek means stone and glyph means image.

Cuenus means wedge in Latin. It is a form of writing on soft clay with the help of a stylus. Wedge shaped characters are marked on a clay and this type of writing began in Mesopotamia.

After writing on the soft clay, it is heated on a huge oven so that the characters are preserved as a record for a long time.  

tell him great job!

explanation:

articles of confederation