How many beats is a quarter note worth in four-four time?

Which sentences describes the steps in creating an animation

To make an etching the artist first coats the entire printing plate with an acid-resistant substance called a made from beeswax, asphalt, and other material. the artist then draws on the coated plate with an etching needle exposing the metal. next the plate is dipped in the plate is removed, the waxy coating removed, and the plate is cleaned, inked and printed.

Organum was first developed by religious singers adding another melody directly above the chant and mirroring the chant line. true false