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The formation of hydrosphere in Earth's evolution is mainly linked with what?

Answer and explanation

Correct answer: Condensation of water vapour and rainfall

The hydrosphere means all the water found on Earth, including oceans, seas, rivers, lakes, groundwater, and water vapour. In the early stage, Earth was extremely hot, and water existed mainly as vapour. As the surface and atmosphere cooled, this vapour changed into liquid water. Therefore, the formation of the hydrosphere is mainly connected with condensation and rainfall, so option D is correct. Breaking stars, expansion of the Sun, and disappearance of the magnetic field do not explain the formation of Earth's oceans and other water bodies.

The sequence is important: water vapour first accumulated, cooling caused condensation, and continued condensation produced clouds and rainfall. Over a long period, rainwater collected in low-lying areas and helped form oceans. This does not mean that every part of the hydrosphere formed in exactly the same way, but condensation and precipitation are the central processes described in this question. Thus, option D gives the scientifically appropriate explanation.

Related tags

HydrosphereCondensationRainfall

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