Jerome has a beautifully landscaped front lawn with lots of colorful flowers. Landscaped lawns produce a externality. landscaped lawns exist relative to the socially efficient quantity. b. Dave takes advantage of the low price of gas to purchase a sports utility vehicle. Sports utility vehicles generate a externality. sports utility vehicles are produced relative to the socially efficient quantity. c. Susan decides to walk to work instead of driving. Walking to work creates a externality. walks to work exist relative to the socially efficient quantity. d. Anita decides to smoke a cigarette while she is waiting at a busy bus stop. Cigarettes create a externality. cigarettes are produced relative to the socially efficient quantity.

among other factors, composers started writing dynamic markings in their scores because "new instruments allowed for more dynamic ranges and contrast."

dynamics allude to the loudness or softness of music. dynamics offer an approach to demonstrate articulation in sheet music. they to drive the enthusiastic substance of music through volume and force. maybe you could alter both the volume and the shading profundity on your screen at the same time. we can likewise think about the force side of elements as the quality of a note. a few notes are intended to be played delicately and gently, while others are intended to be played all the more firmly.  

some dynamics markings have a letter 'm,' which remains for mezzo, signifying 'medium.' so a mezzo piano unique stamping resembles this (mp) and intends to play medium calm, while a mezzo specialty dynamic resembles this (mf) and intends to play medium loud.