I believe the correct answer to this is:
groin vaults are constructed by placing barrel vaults at right angles to cover a sqaure space known as a bay.
Hope this helps :)
The preffered material from which Etruscans made their sculptures is terra cotta. Marble was also used to make sculptures. Bronze was rarely but used to make sculptures, so stone in my opinion was the material that wasn't used to make sculptures.
Answer:
I believe it shows both higher level thinking as well as a form of art. The Blombos caves shows ancient artifacts showing interlectual structure of improvement by adapting the form of art. The caves preserved the art showing that they have learned how to create triangular art by carving the stone(similar to the woodcut technique) which would be widdled with a sharp object such as a knife, bones, or a sharp stone. As for the artifacts, the cave walls were painted(proof of art) showing ancient animals and how they hunted by creating weapons(also artifacts). So as you might see, the Blombos caves show artifacts of a higher thinking as well as a form of art.
Explanation:
You might want to rephrase it slightly so that you dont get a 0 on it
Twentieth-century composers often changed time signatures within a single movement resulting in mixed meter.
