The abyssal plains are predominantly made of igneous rocks as their basic layer, more specifically, basalt from the oceanic crust with which they are underlined with. The basalt is an igneous rock, it is a dark, fine grained volcanic rock.
Answer: distortion. and can you please give me a brainliest?
Answer:
The continents have moved over time.
Explanation:
Fossils are one of the best indicators of Earth's history. They are great information about how organisms looked, lived, evolved, but also they show what was the climate like, the geography, and even Earth's processes. The fossils are actually used as one of the best evidence for the theory of plate tectonics.
The reason why fossils are so important for the theory of plate tectonics is that there are numerous species of organisms that have been discovered in different continents that have no connection at present whatsoever and are far away from each other. It is practically impossible for exactly the same organisms to evolve in different places, especially not in different environments. In multiple specimens of a single species are left in several different environments, if they survive, they will all evolve different characteristics, not remain the same. This proves that continents that now are not connected, in the past were actually merged together, but because of divergent plate boundaries have moved away from each other.
The Mercalli Intensity Scale has twelve levels of intensity. The Richter scale is most useful for earthquakes of all sizes and distances. The magnitude scale is good for small, nearby earthquakes because it doesn't have any upper limit. The magnitude scale takes into account the movement of rocks along fault lines. The Richter scale rates the earthquakes based on the amount of disruption they cause.
Charles F. Richter created the Richter scale in 1934, which became the first commonly used technique. It made use of a formula based on the distance between the earthquake and the seismometer and the amplitude of the greatest wave recorded on a particular kind of seismometer. It measures earthquakes ranging in magnitude from one to ten.
Giuseppe Mercalli created the Mercalli intensity scale in 1902. In contrast to seismic magnitude scales, which measure the earthquake's inherent energy or intensity, it evaluates the impacts of an earthquake at a specific site. It has 12 levels of intensity.
Learn more about scales used to measure earthquakes at
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