Sources of Greenhouse Gas Emissions US EPA
Carbon dioxide CO 2 makes up the vast majority of greenhouse gas emissions from the sector but smaller amounts of methane CH 4 and nitrous oxide N 2 O are also emitted. These gases are released during the combustion of fossil fuels such as coal oil and natural gas to produce electricity.
List any three human activities which would lead to an
Three human activities which would lead to an increase in the carbon dioxide content of air are: i Combustion of fossil fuels like coal and petroleum releases carbon dioxide in the atmosphere. ii Deforestation leads to an increase in carbon dioxide content in the atmosphere.
Which emits more carbon dioxide: volcanoes or human
Occasionally eruptions are powerful enough to release carbon dioxide at a rate that matches or even exceeds the global rate of human emissions for a few hours. For example Gerlach estimated that the eruptions of Mount St. Helens 1980 and Pinatubo 1991 both released carbon dioxide on a scale similar to human output for about nine hours.
Carbon Sources and Sinks National Geographic Society
Forests are typically carbon sinks places that absorb more carbon than they release. They continually take carbon out of the atmosphere through the process of photosynthesis. The ocean is another example of a carbon sink absorbing a large amount of carbon dioxide from the atmosphere. Some processes release more carbon dioxide into the
The Carbon Footprint of Daily Activities Live Science
If you 39re eating 444 calories a day of red meat the equivalent of about one 8ounce steak sirloin your annual meatrelated carbon footprint is 0.8 metric tons of carbon dioxide. Try switching
How does carbon get into the atmosphere USGS
Atmospheric carbon dioxide comes from two primary sourcesnatural and human activities. Natural sources of carbon dioxide include most animals which exhale carbon dioxide as a waste product. Human activities that lead to carbon dioxide emissions come primarily from energy production including burning coal oil or natural gas.
What human activities increase carbon dioxide in the
High carbon dioxide producing activities include: Consuming electricity: Burning fossil fuels emits CO2 with coal releasing twice as much of the gas as petroleum. Worldwide fossil fuels generate 85 percent of electricity. The number of coalburning plants will increase as China and India continue to industrialize.
Main sources of carbon dioxide emissions What 39s Your Impact
There are both natural and human sources of carbon dioxide emissions. Natural sources include decomposition ocean release and respiration. Human sources come from activities like cement production deforestation as well as the burning of fossil fuels like coal oil and natural gas.