GEOLOGY

Detailed explanation-1: -Without them, Earth’s surface temperature would be about 59 degrees Fahrenheit (33 degrees Celsius) colder. Water vapor is also a key part of Earth’s water cycle: the path that all water follows as it moves around Earth’s atmosphere, land, and ocean as liquid water, solid ice, and gaseous water vapor.

Detailed explanation-2: -Without the atmosphere, the solar radiation would heat the Earth during the day and escape during the night. Thus, if there were no atmosphere around the Earth, the Earth’s temperature would increase during the day and decrease during the night.

Detailed explanation-3: -Dry air does not contain water vapour. Whereas moist, warm and polluted air contains water vapour. The humidity in the air is because of the presence of water vapour.

Detailed explanation-4: -Without water vapor and other greenhouse gases in the air, surface air temperatures would be well below freezing. The concentration of water vapor in the atmosphere reflects the number of molecules of water compared with the total number of air molecules (mainly nitrogen and oxygen).

Detailed explanation-5: -With no water supply, all vegetation would soon die out and the world would resemble a brownish dot, rather than a green and blue one. Clouds would cease to formulate and precipitation would stop as a necessary consequence, meaning that the weather would be dictated almost entirely by wind patterns.