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

paul mccartney, john lennon, george harrison, and ringo starr are the members of the beatles an american band from liverpool that was formed in 1960. it is writing songs and performing their own music are the reasons that influenced many american rock artists and groups. their group was the perfect role model for the youth during their time.

i believe the answer is  the similarity is that both are sacrifices which have the same purpose and sacrifice - jesus christ, but the difference is in offering of that sacrifice.

the similarity is that both are sacrifices which have the same purpose (repenting our sins) and sacrifice - jesus christ.  the difference is in the way of the offering that sacrifice. the sacrifice of jesus on the calvary is sacrifice of his actual living body and blood, but the sacrifice of the mass is the sacrifice of the jesus through bread (body) and blood (wine). in the sacrifice on calvary jesus was offered for us; while at mass he offers himself through us.