The subject of science is very broad. With that being said, I think there is no official regulatory board that decides the branches of science. Scientific developments are products of joined efforts of different scientists. These scientists could rebuke another's work provided there is evidence. As long as the theory is generally accepted by the scientists and no one rebukes it effectively, then it is a generally accepted fact and everyone adapts it.
Hence, the answer is B.
The correct answer is - Seafloor spreading at the mid-ocean ridge provides the mechanism for tectonic plate movement.
Harry Hess is one of the people that is most important when it comes to the proving and world wide acceptance of the continental drift theory.
Hess was very interested in the topic, and he was constantly looking for clues that would bring light to it and finally have a definite proof of it. While sailing through the Atlantic and doing some examinations, Hess noticed that there high mountains in the water, having flat peaks, and being arranged in an interesting manner. These underwater mountains, named guyouts, were the highest at a certain point, and than on both sides, as the distance was increasing they were becoming smaller and smaller.
What Hess stumbled upon was the seafloor spreading and how it works, and he recognized that quickly. He immediately went on to share what he discovered, that there's magma coming from bellow, solidifying and spreading, thus creating new crust while pushing the old crust away from the center, which is the reason why the continents are moving.
Answer:
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Explanation:
Answer:
NAFTA and its purpose are to eliminate the obstacles in the trade between the USA, Canada, and Mexico.
Explanation:
It is a NorthAmerican agreement for trading between these 3 countries. It is the biggest agreement for free trade. NAFTA has abolished customs duties on more than half of Mexico's exports to the US and more than today's third US to Mexico.
One of the evidences that Wegener used for his theory of continental drift was that the mountains in North America appear to be part of the same chain of mountains as those in Northern Europe.
Explanation:
Alfred Wegener is considered to be the first person that managed to gather enough evidence and push through the theory of continental drift. This was not an easy task though, as the technology was still not at as developed as it is now, and also there was big skepticism among the other scientists about his suggestions. Wegener was not discouraged, but instead he totally focused his career on the continental drift theory, and eventually it paid off.
One of the evidence that Wegener was using was that the mountains in the eastern part of North America appear to part of the same chain of mountains as those in Northern Europe. Wegener was right, as the Appalachian Mountain Range and the mountains in Scandinavia are actually formed as part of the same orogeny, and they were indeed connected. Over time Europe and North America drifted apart, but the evidence are there to be seen
Other evidence that Wegener used for his theory are:
- the matching coastlines of South America and Africa
- fossil evidence
- geological evidence
- mid-Atlantic Ocean ridge
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