Which of these could be considered models? Check all that apply. a drawing of Earth's rock layers
a digital measuring tool
a computer design of a space shuttle
a 3-D representation of a volcano
a rover on the surface of Mars

drawing of Earth's rock layers

computer design of a space shuttle

3-D representation of a volcano

Explanation:

A scientific model can be defined as the physical, conceptual, and mathematical representation of the facts, processes and events. This helps in demonstration, education, and prediction of patterns of the world based on various aspects of the scientific study.

The drawing of the earth rock layers will help in understanding the generation of rocks.

The computer designed shuttle will help in understanding its function and working in the space.

The 3-D representation of volcano will help in understanding the formation and effect of volcano in the surrounding.

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305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures