What would likely have happened to Earth if no icy debris had arrived?
a] It would still have oceans but no atmospheric water.
b] It would still have atmospheric water but no oceans.
c] It would have no oceans or atmospheric water.
d] It would have traces of water beneath its surface.
e] It would have released water in volcanic outgassing.
The answer would be e. it would have released water in a volcanic outgassing. The planets were hot to have gas from the solar nebula. Earth,Mars as well as Venus then created their atmosphere through volcanic eruption and retain gases from comet and icy planetesimals vaporizing.
