Question

Which sentence BEST explains how the solar nebula affected the formation of the Earth's

water?
(A) The solar nebula is the leftover gas and dust that formed clouds in the universe
after the sun's formation and eventually deposited its water in Earth's atmosphere.
(B) The solar nebula helped attract several water-rich asteroids to the developing
Earth embryo, and the water from those asteroids made up all of the Earth's water
molecules.
(C) The solar nebula's chemical formula brought an abundance of both hydrogen and
oxygen that eventually found each other and combined to form water.
(D) The solar nebula's dissolved hydrogen originally settled in the Earth's core, but
some of it escaped and joined with oxygen to make 1 percent of Earth's water
molecules

Answer 1

The solar nebula contributed to the formation of Earth's water by depositing ice-rich comet-like materials onto the young planet, which over time developed into Earth's oceans, making it hospitable for life.

Step-by-step explanation:

The question seeks to understand how the solar nebula contributed to the formation of Earth's water. The solar nebula, which is the cloud of gas and dust from which the solar system formed, played a significant role in Earth's water formation. As it collapsed under its gravity, it formed the Sun and a rotating disk around it, where planets started to take shape. These planets, including Earth, were bombarded with ice-rich cometary material, which may have been a significant source of water. Furthermore, interstellar clouds abundant in water contribute to the initial composition of solar systems, suggesting that some of Earth's water could also originate from there.

Considering this information, the most accurate explanation is option A: The solar nebula is the leftover gas and dust that formed clouds in the universe after the sun's formation and eventually deposited its water in Earth's atmosphere. This ongoing comet-like bombardment with debris from the solar nebula played a substantial part in providing Earth with the water we have today, contributing to the oceans and making Earth hospitable to life.