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:
I think it is population geography
1. The Sahara Desert
2. Grassy plains of Kansas
3. Lake Michigan
4. An Arctic glacier
Explanation:
The insolation is not the same across the planet, and it varies from one place to another. The variations occur mainly because of two things, one being the latitude and the other being the the type of surface.
The places that are on lower latitudes get more direct sunlight, thus more concentrated, and they manage to absorb more heat. The places on higher latitudes get sunlight at very low angle, thus very dispersed, and they absorb much less heat.
The surfaces that are without cover, on land, tend to have higher insolation. The surfaces that are with cover, or are water bodies, ice bodies, have lower insolation.
It would be normal faulting, like the Mid-Atlantic Ridge
