What is the drawing technique of using dots to create degrees of shading or solidity instead of using lines

Choose one piece of art from the unit. identify at least three elements or principles of art in this piece of artwork. discuss each element or principle and how it is used in the piece.

Ineed some on finding music. i have a nephew who is into rap, but when i find a rap song, it seems to either be too old for his taste or to him it isn't good enough. can someone suggest some good music for me to see if he likes it or not?

How were objects painted before cubism