Question

2.) How did volcanoes affect the origins of the seas?

Answer 1

Water vapor is one of the many gasses released during volcanic eruptions. The water in the oceans primarily originated from the condensation and precipitation of water vapor that had been out-gassed by volcanic eruptions over the 3-4 billions of years of Earth's geologic history?

Answer 2

The water in the oceans primarily originated from the condensation and precipitation of water vapor that had been out-gassed by volcanic eruptions