Among the two- and three-dimensional shapes used by artists to define space are biomorphic shapes, which are a. two-dimensional and representational. b. representational shapes that have been simplified. c. naturalistic and formed by uneven curves. d. three-dimensional and geometric.

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Opposition of two melodic ideas is the  right answer 

Musical notation is a system which is used to  visually represent music  pertaining to the ear  contend  with instruments or sung by the human voice through  the employment  of written, printed, or different symbols.in the western music tradition, the sound is represented in written form through musical notation.in musical notation, the pitch is indicated exclusively by the position of notes on the lines and spaces of the staff.

It is a h*e a** b***h