In contrast to classical conditioning, operant conditioning requires

Which composer worked for empress maria a. peri b. palestrina c. lassus d. victoria

This is a picture i'm drawing for my art class! i need to know if it good (first of all) and that it represents dia de los muertos (

Type the correct answer in the box. spell all words correctly. what did german psychologists develop in the 1920s to describe how people tend to organize visual elements into groups? describe how people tend to organize visual elements into groups, or unified wholes, when applying certain principles.