I would say that the answer is A.
Abyssal plains are large, flat features that cover about one third of the planet.
<h3>What are Abyssal plains?</h3>
- The broad, flat, sediment-covered regions of the deep ocean floor are known as abyssal plains.
- They have a slope of less than one foot of height variation for every thousand feet of travel, making them the flattest, featureless places on Earth.
- When tectonic plates separate, magma rises and forms new crust, filling the space that was left between the plates.
- When sediments from the shoreline pass over the continental shelf, tumble down the continental slope, and deposit on top of the more recent oceanic crust, they create an abyssal plane.
Learn more about Abyssal plains here:
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Answer:
The three sand are similar in composition, since all are formed 90% by quartz. They are also similar in roundness, as they all have large particles that allow a very sandy soil with low water retention.
Explanation:
The desert area of the river and the beach have a very similar composition, since 90% of these sands are composed of quartz. however, the similarity does not mean that these sands are the same, as they are not, since the sands of the beach and the river may have a little more material, such as animal remains, making these sands also have carbon in composition, something that desert sand has in less quantity.
In addition, both sands have large particles that promote strong aeration in the soil, but a very rapid loss of organic matter.
The Nile river! :) Hope it helps