how water formed on the earth
Answers
Answer:
The surface of the very young Earth was initially an ocean of magma. Hydrogen and noble gases from the solar nebula were drawn to the planetary embryo, forming the first atmosphere. Nebular hydrogen, which contains less deuterium and is lighter than asteroidal hydrogen, dissolved into the molten iron of the magma ocean.
Hydrogen was then drawn toward the center of the Earth – a process called isotopic fractionation. Hydrogen was delivered to the core through its attraction to iron, while much of the heavier isotope, deuterium, remained in the magma which eventually cooled to form the mantle. Impacts from smaller planetary embryos and other objects continued to add additional water and mass until Earth reached its final size.
The end result was that Earth had noble gases deep in its interior, with a lower deuterium-to-hydrogen ratio in its core than in its mantle and oceans. Most of Earth’s water did come from asteroids, but some also came from the solar nebula
Answer:
Mr. Das ordered his servant to go to the nearest shop and buy a packet of biscuits.
Explanation:
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