What kind of rhythmic notes are these a- fourth b-quater c-sixteenth d-eighth

Whichis a combination of individual pieces that create a longer musical work?

Describe the various work performed by multimedia artists, the creative experiences individual studio employees bring to their work, digital equipment they frequently use, as well as professional opportunities outside of a full-service multimedia studio they recommend for those just starting their careers in the field.

Riddle me this: i am first in earth,second in heaven,appear two times in aweekyou can only see meonce in a year, althoughi'm in the middle of sea.what am i?