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Answer </h2>
The right option of this question is <u>Galileo's observation of stars in the Milky Way.</u>
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Explanation</h2>
The two types of models and the geocentric model and heliocentric model during the ancient time. In the first model, it was considered that all heavy bodies rotate around the sun. In the second model, it was stated that all heavy bodies rotate around the sun. in his time, Gallio supported the second model as the sun is the central part and around it, all other heavy bodies rotate. He was the first person, who used the telescope to observe dark spot and the Venus movement which then supported the heliocentric model.
Under Communist leadership, North Korea has continued to evolve into a capitalist country. All deals that they make outside the country is leading towards capitalism and gaining an upper hand. This country has recently exposed a powerful nuclear missile and has shown the world their capabilities.
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.
Learn more about convection currents brainly.com/question/223549
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