Superposition is the geologic principle which explains why the bottom stratum in a section of rock is the oldest. The word literally means placing one thing on top of another where the lower strata are the older.
An unconformity is a geologic principle that was given by James Hutton in 1788, which states that surfaces separating two stratum or rock masses of different ages indicate that sediment deposition was not continuous, in general, the older layer were subjected to erosion and then depositions of the younger layer.
Thus it describes a break in the geologic structure from the older to the younger hence its a kind of relative dating of rocks.
Photosynthesis is the process of where plants and other organisms use sunlight to get foods from water and carbon dioxide. Photosynthesis in a plant involves green pigment and generates oxygen.
The molten rock from the cloth exploded next to the hole, forming a new crust. Earthquakes occur in these areas, called distribution centers, are minimal. The Great Rift Valley in Africa, the Red Sea and the Gulf of Aden were all formed as a result of the movement of various plates.
The changing plate border is the area where two tectonic plates move to each other, often causing one plate to slide under the other. A collision of tectonic plates could lead to earthquakes, mountains, mountain construction, and other geological events.
When two tectonic plates slide past each other, the area where they meet is a rotating or lateral error. The San Andreas Fault is one of the best examples of lateral plate movement.
The air, water, and ice erode and shape the earth. Volcanic activity and earthquakes are changing the landscape in a dramatic and often violent way. And with more time, the movement of the plates of the earth also exposes the oceans and continents. (Check the image for evidence)