What historical events were happening while the photographer Ansel Adams was alive and working

Is this an example of a relief? why? what type of relief sculpture is it? explain.

Ablank is a type of chord that consists of three pitches on consecutive lines or spacesa. monophonyb. chordc. triadd. natural

The dynamics of a musical piece refer to the a. key signature b. composer’s history c. volume changes d. instrumentation