Based on our current theory of Earth's formation,the water we drink comes from
A)ice that condensed in the solar nebula in the region where Earth formed.
B)chemical reactions that occurred in Earth's crust after Earth formed.
C)chemical reactions that occurred in Earth's core after Earth formed.
D)material left behind during the giant impact that formed the Moon.
E)comets that impacted Earth.

Question

Quizplus · Accepted Answer

Comets, which are composed largely of ice, are believed to have delivered water to Earth through impacts after the planet formed.

Based on Our Current Theory of Earth's Formation,the Water We