Answer: do you need help on this .
Explanation:
A model is a three-dimensional of a person/thing or of a proposed structure.
A mock up is a model or replica of a machine or structure, used for instructional or experimental purposes.
A prototype is a first or preliminary version of a device or vehicle from which other forms are developed.
Answer:
Designs for frescoes and tapestries are called cartoons.
Answer:
Hiya
Explanation:
They are the different pitches of someones voice, from "Do" being at the lowest pitch and the second "Do" being at the highest pitch
