Which of these could be considered models? Check all that apply.a drawing of Earth’s rock layersa digital measuring toola computer design of a space shuttlea 3-D representation of a volcanoa rover on the surface of Mars

A model represents or shows something, often to help people study or understand it. A drawing of Earth’s rock layers, a computer design of a space shuttle, and a 3-D representation of a volcano are all representations, so they could be considered models. A digital measuring tool is an instrument, and a rover on Mars is a real vehicle rather than a representation.

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