Answer:
For the matching mountain ranges found in different locations to have correlating lithologies and ages, we can best resolve their location today to be a product of plate tectonics.
The theory of plate tectonics combines the ideas behind the theories of continental drift and sea floor spreading. These terrains, west Africa, Europe and Appalachians must have been joined together as a single land mass where the same geologic mountain building process (progeny) produced the ranges. The plates then broke up and the continents moved to their present day positions. They are still moving anyway..
Answer:
A. Both cell walls provide structural support but fungi is made of polysaccharides and chitin and plants are made of cellulose.
The reference point = a object used for comparison to determine if something is in motion.
An object is in motion if it changes position relative to a reference point.
You assume that the reference point is stationary, or not moving.