The atmospheric blanket
Water vapor is produced primarily from evaporation from the oceans, surface soils, and subsurface aquifers and then spreads around the planet. It is the water vapor in the atmosphere that forms clouds and rain, thus creating rivers, lakes, glaciers, and ski slopes. Water vapor, carbon dioxide, and greenhouse gases warm our planet. Without these greenhouse gases, our planet would be about as cold as Mars and far too cold to support liquid water and life.
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Voice: English (US) - female voice