Canadian logging companies sell timber in the United States. To the U. S., the timber is a(n), and for Canadians, the timber is a(n) .

import; export

Explanation:

Canadian logging companies sell timber in the United States. To the U.S., the timber is an import, and for Canadians, the timber is an export.

An import is a good that is brought into a country and sold from another country while an export is a good that a country sells to other country. Timber is a export to the United States since it's brought from Canada.

c.

clarify customers’ doubts only when asked.

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.