How far do you agree with this statement that "Scientists believe global warming is caused only by human activity"?

Human activity has been increasing the concentration of greenhouse
gases in the(mostly carbon dioxide from combustion of coal, oil, and gas; plus a few other trace
gases). There is no scientific debate on this point. (National Oceanic and Atmospheric
Administration)

The age of debate over whether global
warming and the subsequent global climate change exist is past. The age of debate over whether
it is caused by human agency is past. As the NOAA says, there "is no scientific
debate" on these points any longer. While global warming has historically been caused by
natural factors of chemical changes on Earth and changes in the Sun's solar activity, the
present problem of global warming and the resultant global climate change is caused solely by
human activity, whether you are discussing the effect of carbon dioxide, methane or
chlorofluorocarbons, each of these is at problematic levels because of human agency and
activity.

The questions that do remain are: What is the
accurate...

title="Global Warming, NOAA">

href="https://www.epa.gov/sites/production/files/signpost/cc.html" title="Causes
of Climate Change, EPA">

href="https://www.forbes.com/sites/timworstall/2013/06/29/carbon-dioxide-doesnt-cause-climate-change-thats-the-claim/"
title="Carbon Dioxide Doesn't Cause Climate Change: That's The Claim by Tim Worstall.
Forbes">

href="https://phys.org/news/2013-05-global-chlorofluorocarbons-carbon-dioxide.html"
title="Global warming caused by chlorofluorocarbons, University of Waterloo.
PHYS.org">

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href="http://ossfoundation.us/projects/environment/global-warming/human-caused">http://ossfoundation.us/projects/environment/global-warmi...