Question

Explain where scientists think Earth's water may have come from.

Answer 1

A study suggests much of the water originated in rocks from which Earth is built. AUDIE CORNISH, HOST: ... She says that source of water could have been farther out in the solar system, like maybe icy comets or water-rich asteroids that hit the newly formed Earth and watered it. This has long been the prevailing view

Answer 2

Explanation:

Scientists have long debated whether the Earth's water was here when the planet formed or whether it arrived later. A study suggests much of the water originated in rocks from which Earth is built.