Answer:
9 cm per year
Explanation:
By measuring the length of the volcanic chain and the time interval between the formation of the oldest structure and the youngest structure, an average speed of plate movement can be calculated.
A plateau is an area of relatively level high ground and a plain is a large area of flat land with few trees.
The answer to the question is the total surface area increases and chemical composition changes. Consider the breakdown of rock into smaller pieces, these fragments vary from huge rocks to smaller sizes. As they are so crushed and broken they tend to occupy much of the surface area than when its just a huge rock.
I believe that it is a waxing gibbous and a waxing crescent
