According to Plate Tectonics
theory, there are seven large plats on the Earth’s crust that are moving on a
large scale, creating the phenomenon called continental drift. The reason why
oceans do not become bigger is that the old crust is destroyed as it goes under
in the subduction zones and to the mantle. According to estimates, the Atlantic
Ocean is spreading, but the Pacific Ocean is not since it is undergoing
subduction in many of its boundaries.
Answer: earthquakes
Explanation: I had the same question and that was the answer
Answer:
D. cardinal directions
Explanation:
The cardinal directions are the four basic sides of the world. They are used in every segment of the human lives, and in wide variety of fields. The four cardinal directions are east, west, north, and south. They are further divided for more precise defining of the space and things, initially into southwest, southeast, northwest, and northeast, and later even in more detail as south-southwest, south-southeast, north-northwest, and north-northeast. Each side has something associated with it, with the east usually being associated as the side from which the sun rises, west as the side where the sun sets, north being associated with cold, and south associated with warmth.
On their northern and western frontiers, the chinese people were isolated from people in other parts of asia by the people of Mongolian, Indo-European, and Turkish ancestry resided beyond these boundaries.
Frontier :
A political and physical territory near or beyond a boundary is referred to as a frontier. A frontier can also be called a "front." The name originated in the 15th century from French and meant "borderland"—the region of a country that borders another (see also marches). In contrast to a border, which is a solid and clear-cut form of state boundary, a frontier might be imprecise or diffuse. In the 1800s, for example, the border between the Eastern United States and the Old West was a place where European American populations gradually thinned out and gave way to Native American settlements or unoccupied terrain.
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Tectonic forces are forces that help continents slowing expand and shape areas. They are like plates under the earth and the move along the lithosphere. As this plates move, they form valleys and mountains. Tectonic forces shape Canada as they slowly move and expand and create new landforms.
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~kaikers