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.
Sunlight and carbon dioxide.
The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.
Early settlers came from Britain because of religious prosecution. They went to America because it was uninhabited land, besides the natives. Also there was good natural resources and opportunities like agriculture in the south, wheat farming in the middle colonies, and lumber, furs, and trading ports in the northern colonies.