Oxygen is used for breathing (humans) without it our lungs wouldn't respire, water vapour is included in the water cycle so if we didn't have it we wouldn't have water at all, carbon dioxide is needed because it is the main source that is needed for photosynthesis and provides us with oxygen as the equation for photosynthesis is: Carbon Dioxide + Water= glucose+oxygen
Hope dat helped :)
They are both gases whose molecules contain 3 atoms. This means that they can absorb heat. They are greenhouse gases.
They both absorb energy from the earth's surface, thereby heating the atmosphere.
They both absorb heat rising fom the earth's surface (infrared radiation) because they are greenhouse gases. So they are making the atmosphere warmer. This is called the greenhouse effect, and the extra carbon dioxide (CO2) we are emitting (by burning fossil fuels (coal, oil and natural gas)) is causing global warming.
They act as green house gases which in-turn regulate the earths climate
They both are greenhouse gases. they cause global warming.
oceans
Water vapour forms clouds that bring rain.
You must be fishing for "water vapor". It varies a lot (the 'humidity'),but can be up to (not 'at least') about 4%.All other constituents of normal atmosphere are either much more ormuch less than than 4% .
The amount of water vapor in the atmosphere varies from place to place. Humidity is the term used to describe the amount of water vapor in the atmosphere.
Relative humidity the exact amount of water vapor in the atmosphere (specific humidity)
You think probable to the aerosols from the atmosphere which act as nucleation centers.
Water Vapor
oceans
Water vapour forms clouds that bring rain.
The evaporation is less important if the atmosphere is humid.
vapor
You must be fishing for "water vapor". It varies a lot (the 'humidity'),but can be up to (not 'at least') about 4%.All other constituents of normal atmosphere are either much more ormuch less than than 4% .
The amount of water vapor in the atmosphere varies from place to place. Humidity is the term used to describe the amount of water vapor in the atmosphere.
Relative humidity the exact amount of water vapor in the atmosphere (specific humidity)
Carbon dioxide (CO2)Methane (CH4)
The Troposhere has the most water vapor then any other layer in the atmosphere.
The main processes that return water vapor to the atmosphere are evaporation and transpiration. Evaporation occurs when liquid water changes into water vapor from sources such as oceans, lakes, and rivers. Transpiration is the process through which plants release water vapor from their leaves into the atmosphere. Both of these processes contribute to the water cycle by replenishing the atmosphere with water vapor.