Which of the following is evidence that global warming is taking place?
Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that Earth's climate responds to changes in greenhouse gas levels. Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks.
Which is the most abundant of the naturally occurring greenhouse gases?
What is the most abundant greenhouse gas in the Earth's atmosphere? The Earth's most abundant greenhouse gas is water vapor, or H2O.
How do greenhouse gases cause global warming?
Greenhouse gases The main driver of climate change is the greenhouse effect. Some gases in the Earth's atmosphere act a bit like the glass in a greenhouse, trapping the sun's heat and stopping it from leaking back into space and causing global warming.
Which gas is responsible for global warming?
Carbon dioxide (CO2)Global Warming Potential (100-year): 1 Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. In 2020, CO2 accounted for about 79% of all U.S. greenhouse gas emissions from human activities.
American Scientific Societies
Science Academies
- International Academies: Joint Statement
"Climate change is real. There will always be uncertainty in understanding a system as complex as the world’s climate. However there is now strong evidence that significant global warming is occurring. The evidence comes from direct measurements of rising surface air temperatures an…
See more on climate.nasa.gov
U.S. Government Agencies
U.S. Global Change Research Program"Earth’s climate is now changing faster than at any point in the history of modern civilization, primarily as a result of human activities." (2018, 13 U.S. govern...
See more on climate.nasa.gov
Intergovernmental Bodies
Intergovernmental Panel on Climate Change“Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere...
See more on climate.nasa.gov
Other Resources
- List of Worldwide Scientific Organizations
The following page lists the nearly 200 worldwide scientific organizations that hold the position that climate change has been caused by human action. http://www.opr.ca.gov/facts/list-of-scientific-organizations.html - U.S. Agencies
The following page contains information on what federal agencies are doing to adapt to climate change. https://www.c2es.org/site/assets/uploads/2012/02/climate-change-adaptation-what-federal-agencies-are-doing.pdf *Technically, a “consensus” is a general agreement of opinion, bu…
See more on climate.nasa.gov