D. Density
The bulk density of a planet will reflect the relative amounts of the materials the world is made of, regardless of what materials occur at the surface.
Answer: it represents ship trading routes for certain materials and slaves
Explanation: the arrows point across water which indicates that that is a ship route and the arrows have words on them so that also indicates that those things are bieng traded.
The longed subdivision in geologic time is an eon.
A tourist destination i think because many people around the world visit it and just go there. It is also a common known place.
