The bar graph illustrates the distribution of the global warming.As is shown by the graph, just over 70 percent of Americans who believed global warming is very
real and about 50 percent of Americans and almost climate scientists believe the happen is             caused mostly by human activity. However, still have about 10 percent of Americans do not believe global warming. Just over 50 percent of Americans say'very worried' about the happen and more than 70 percent of Americans trust climate scientists as a source of information about global warming . Only one percent of all carbon dioxide that is emitted by man made sources.