One major difference between opera buffa and opera seria is: A. Opera seria is meant to be staged in sections, while opera buffa is meant to be watched all at once.
B. Opera buffa has comic elements, while opera seria is strictly dramatic
C. Opera buffa makes fun of the middle class, while opera seria makes fun of the upper class.
D. Opera seria was a form of 19th century opera, while opera buffa was a form of 18th century opera

Which of the following accurately describes the workforces of the united states and canada? a. most of the workforce in the united states and canada is employed in the service industry. b. most of the workforce in the united states and canada is employed in the educational field. c. most of the workforce in the united states and canada is employed in manufacturing and mining. d. most of the workforce in the united states and canada is employed in agriculture.