Mound builders used copper to build the plaques
Answer = Copper
The answer is B. Johnny Cash
Answer:
Hello There!!
Explanation:
The true horizon is a circle which is defined by the line of a sight from an observational point that is a tangent line to a sphere and the visible horizon is the actual line dividing the Earth's features and the sky.
hope this helps,have a great day!!
~Pinky~
