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How are humans responsible for global warming? | Environmental ...

www.edf.org/climate/human-activity-is-causing-global-warming

Jul 21, 2016 ... Causes of global warming include human activities like deforestation and burning fossil fuels.

Global Warming is Human Caused - National Wildlife Federation

www.nwf.org/Wildlife/Threats-to-Wildlife/Global-Warming/Global-Warming-is-Human-Caused.aspx

Scientists have concluded that most of the observed warming is very likely due to the ... Human activity--such as burning fossil fuels--causes more greenhouse ...

Causes of Global Warming: the Human Impact

globalwarming-facts.info/causes-global-warming-human/

Evidence That Humans are Causing Global Warming ... This is largely due to human activities; primarily the burning of fossil fuels, but also due to deforestation  ...

Science | Climate Change | US EPA

www3.epa.gov/climatechange/science/overview.html

Natural causes alone cannot explain all of these changes. Human activities are contributing to climate change, primarily by releasing billions of tons of carbon ...

Is Human Activity Primarily Responsible for Global Climate Change ...

climatechange.procon.org/view.answers.php?questionID=001445

Apr 7, 2015 ... "Multiple lines of independent evidence confirm that human activities are the primary cause of the global warming of the past 50 years.

Climate Change ProCon.org

climatechange.procon.org/

They say the theory of human-caused global climate change is based on questionable ... says human activity is primarily responsible for global climate change.

How do Human Activities Contribute to Climate Change and How do ...

oceanservice.noaa.gov/education/pd/climate/factsheets/howhuman.pdf

Human activities contribute to climate change by causing changes in Earth's ... the overall effect of human activities on climate has been a warm- ing influence.

Human Global Warming: What Are the Main Causes? | PlanetSave

planetsave.com/2009/04/18/human-global-warming-what-are-the-main-causes/

Apr 18, 2009 ... To understand how humans cause global warming, it is important that you are aware of the link between your daily activities and the ...

How Do Humans Cause Global Warming? | PlanetSave

planetsave.com/2009/02/02/how-humans-cause-global-warming/

Feb 2, 2009 ... Humans cause global warming with our unique ability to capture and use .... I think the clear point was which activities cause the warming.

Empirical evidence that humans are causing global warming

www.skepticalscience.com/empirical-evidence-for-global-warming.htm

Direct observations find that CO2 is rising sharply due to human activity. ... a line of empirical evidence that human CO2 emissions are causing global warming.

Answer
There is strong evidence that human activity is a major cause of global warming.
In a study, models based on man-made emissions of greenhouse gases matched the real world observations almost precisely.
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Do We Know that Humans Are the Major Cause of Global Warming

www.ucsusa.org

How Do We Know that Humans Are the Major Cause of Global Warming? ... that emissions of heat-trapping gases from human activities have caused “most of ...

Climate Change: Vital Signs of the Planet: Causes

climate.nasa.gov

Vital Signs of the Planet: Global Climate Change and Global Warming. ... and other human activities have increased concentrations of greenhouse gases.

Climate Change: Vital Signs of the Planet: Evidence

climate.nasa.gov

Vital Signs of the Planet: Global Climate Change and Global Warming. ... ago marking the beginning of the modern climate era — and of human civilization. ... There is no question that increased levels of greenhouse gases must cause the .... very likely due to human activities, and most of the leading scientific organizations ...