Causes of global warming include human activities like deforestation and
burning fossil fuels.
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 ...
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 ...
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
Vital Signs of the Planet: Global Climate Change and Global Warming. ... and
other human activities have increased concentrations of greenhouse gases.
Is Human Activity Primarily Responsible for Global Climate Change? .... Global
warming caused by human-produced greenhouse gases is causing the Arctic ice
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.
Natural causes alone cannot explain all of these changes. Human activities are
contributing to climate change, primarily by releasing billions of tons of carbon ...
How do we know current global warming is human caused, or man made? Is
global ... How do we know that recent CO2 increases are due to human activities
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.