They know because they can work out what percentages of which gas were around through ice samples taken from Antarctica
Carbon dioxide helps the greenhouse in one way. Plants in the greenhouse needs carbon dioxide to grow.
Volcanoes, like the burning of fossil fuels, are also a source of the primary greenhouse gas, carbon dioxide.
Yes, carbon dioxide is a greenhouse gas that contributes to the greenhouse effect. Excess carbon dioxide in the atmosphere traps heat from the Earth's surface, leading to a warming effect known as global warming.
The chemical name of a greenhouse gas that contains carbon and oxygen is carbon dioxide.
No. The greenhouse effect keeps the earth warm. Extra carbon dioxide added to it is causing global warming.
Scientists believe that global warming is happening to the earth because of the greenhouse effect and carbon dioxide pollution in the atmosphere.
Carbon dioxide is the main greenhouse gas. It also causes global warming.
Carbon dioxide helps the greenhouse in one way. Plants in the greenhouse needs carbon dioxide to grow.
Burning fossil fuels adds extra carbon dioxide to the greenhouse gases in the atmosphere.Deforestation removes forests that used to take carbon dioxide from the atmosphere.
Carbon dioxide is a greenhouse gas. Greenhouse gases capture and retain the sun's heat. Increased carbon dioxide levels mean that more and more of this heat is retained. This is warming the earth and the atmosphere all round the world - global warming.
Scientists are using certain species of bacteria and algae to consume carbon dioxide as part of a process called carbon capture and storage (CCS). These organisms use the carbon dioxide as a source of food for growth, helping to reduce the concentration of this greenhouse gas in the atmosphere.
... the burning of fossil fuels, which is adding extra carbon dioxide to the greenhouse gases in the atmosphere.
Carbon dioxide is a greenhouse gas that traps heat in the atmosphere.
Volcanoes, like the burning of fossil fuels, are also a source of the primary greenhouse gas, carbon dioxide.
Carbon dioxide, from the burning of coal, oil and natural gas, the fossil fuels.
Yes, carbon dioxide is a greenhouse gas that contributes to the greenhouse effect. Excess carbon dioxide in the atmosphere traps heat from the Earth's surface, leading to a warming effect known as global warming.
Greenhouse gas.