In addition to comets, water for earth’s early oceans might have come from a. rain. b. rivers. c. cyanobacteria. d. volcanic eruptions.

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In addition to comets, water for earth’s early oceans might have come from a. rain. b. rivers. c. cyanobacteria. d. volcanic eruptions.

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The correct answer is – D. volcanic eruptions.

In recent studies and research about the water on our planet and how it came about, scientists have been able to find new evidence that suggests that not only comets and asteroids contributed to the existence of water on our planet, but also with the volcanoes.

The volcanoes are releasing material from the deepest part of the Earth, the mantle layer, into the atmosphere. The mantle layer, as it happens, contains water in the rocks, so through the volcanic eruptions, which were much larger and much larger in the past, that water was released into the atmosphere. From the atmosphere, that water was falling to the surface, contributing to the creation of the first oceans on Earth.