The basic force that drives plate tectonics are the convection currents.
Explanation:
The surface of Earth is cracked and divided into numerous tectonic plates. Some tectonic plates are very large, thus considered as major plates, while some are significantly smaller. There is constant motion of the tectonic plates, and they constantly move in some direction, causing the occurrence of numerous geological activities.
The tectonic plates don't just move on their own, but there is a driving force. That driving force comes from below them, from the mantle layer, in the form of the convection currents. The convection currents basically represent a circular motion (down-up), where the cooler and denser rocks sinks, while the hot and less dense ones go up, making enormous pressure on the surface.
Some of the major tectonic plates are:
- Eurasian
- North American
- African
- Pacific etc.
Some of the smaller tectonic plates are:
- Arabian
- Cocos
- Philippine
- Juan de Fuca etc.
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Answer:
Well, the Northern colonies were mostly mountains with a colder climate and a thin layer of soil only for subsistence farming. And then, the Southern colonies were mostly plains with warmer climate, and rich fertile soil suitable for farming, especially cash crop.
The most dangerous kind of volcano to live by is the Stratovolcano. The correct option among all the options that are given in the question is the second option or option "B". This kind of volcano produces a medium viscosity lava. I hope the answer comes to your help.
