Answer:
I think it will mean that the words of the question represent the key-words of your thesis. So you mustn't change the words of the question while writing your thesis
The answer is b. the gravitational pull on materials of varying densities.
The interior of the Earth, like that of the other terrestrial planets, is chemically divided into layers. The Earth has an outer silicate solid crust, a highly viscous mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core.
starting billions of years ago Algae converted carbon dioxide to oxygen the algae change the atmosphere of the earth.
A layer (or layers) of gases that surround a planet and are kept in place by the gravity of the planetary body is known as an atmosphere.
It is sometimes referred to as a "sphere," "vapor," or "steam." When the atmosphere's temperature is low and its gravity is strong, a planet can maintain its atmosphere.
The outer part of a star, including the layers above the opaque photosphere, is known as the stellar atmosphere; low-temperature stars may have outer atmospheres with complex molecules.
A whirling disc of gases that compressed against itself and split into a number of evenly spaced rings of gas and matter gave rise to the planets' first atmospheres, which eventually condensed to create the Solar System's planets.
Learn more about the atmosphere here
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Answer and Explanation:
The process of formation of oceanic basins began with the execution of a catastrophe that caused the gradual erosion of the rocks and the relief of a region. This created a series of sediments that spread throughout the region of legend and continues, with the progressive action of wind, rain, rivers, ice, among others.
These sediments are collected in low areas close to oceanic regions and accumulate there for an indefinite period of time, where they overlap for millions of years. Each year, this process reaches deeper and larger areas until it manages to form an oceanic basin.