How The Earth Was Made: Video viewing guide1) According to Dr. Durda, where did the water that now covers our oceans come from?2) what were the two major gases in Earth's atmosphere 4 billion years ago?

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22-07-2022
Biology

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How The Earth Was Made: Video viewing guide1) According to Dr. Durda, where did the water that now covers our oceans come from?2) what were the two major gases in Earth's atmosphere 4 billion years ago?

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AnnuG AnnuG · Answer 1 · 2022-07-31T09:21:49+02:00

Billions years ago ocean is formed , water is remained a gas until the earth cooled 212 degree Fahrenheit below.

According to Dr. Durda that water that comes from earth cycles from the oceans ,in earth water cycle is evaporates from the surface to the atmosphere then form clouds, then fall onto the land as a rain, after rain fall it travels to rivers, lakes and underground .

The two major gases in earth's atmosphere 4 billion year ago the most abundant naturally occcuring gas is oxygen 21% which is second most abundant gas in mature and nitrogen 78% .

To learn more about earth's atmosphere here

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