Question

Fill up the blanks.
............ were engraved on rocks.​

Answer 1

Answer:

A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other descriptions of the technique to refer to such images.

Explanation:

Use a wax-based pencil to draw your design if the stone is rough or porous. Use a china marker or permanent marker to draw on stones with a smooth, glassy surface. Position your stencil where you want it on the stone. Secure the stencil with tape so it doesn't move while you're engraving your design.

Answer 2

Explanation:

_ were engraved on rockes