The increase in carbon dioxide in the Earth's atmosphere over the last 150 years was due to mankind's burning of fossil fuels.
The burning of fossil fuels (coal & oil) is the primary cause of the increase in carbon dioxide levels in the atmosphere.
Burning fossil fuels.
Charles David Keeling discovered that: - the concentration of carbon dioxide in atmosphere has an important seasonal variation - after 1960 he discovered that the concentration of carbon dioxide in atmosphere increase year after year, caused very probable by anthropogenic activities
caused disfunction in the carbon dioxide cycle
Cows, and cattle rearing, have a carbon footprint, but it's caused mostly from the amount of methane they belch. They don't do much to increase carbon dioxide levels.
The burning of fossil fuels (coal & oil) is the primary cause of the increase in carbon dioxide levels in the atmosphere.
burning fossil fuels
Burning fossil fuels.
Charles David Keeling discovered that: - the concentration of carbon dioxide in atmosphere has an important seasonal variation - after 1960 he discovered that the concentration of carbon dioxide in atmosphere increase year after year, caused very probable by anthropogenic activities
Burning of fossil fuels (coal, oil and natural gas).
... the burning of fossil fuels, which is adding extra carbon dioxide to the greenhouse gases in the atmosphere.
caused disfunction in the carbon dioxide cycle
Carbon dioxide (CO2).
The burnt trees are no longer available to remove carbon dioxide from the atmosphere through photosynthesis.
Cows, and cattle rearing, have a carbon footprint, but it's caused mostly from the amount of methane they belch. They don't do much to increase carbon dioxide levels.
Photosynthesis uses carbon dioxide as a raw material where carbon dioxide is fixed into organic molecules. This process lowers the level of carbon dioxide in the atmosphere. The seasonal fluctuation of carbon dioxide levels during a year may be caused by increased photosynthesis during spring and summer.
Cutting trees can cause global warming. Trees absorb carbon dioxide that is causing our greenhouse effect to get stronger.