In a linear process, resources are taken from the Earth and used to manufacture products, and then discarded as waste. When visualized, a linear economy resembles a flat line. Value in the linear economy is created by mass production and the selling of products.
However, the tendency of a linear economy toward wasting valuable materials is a significant problem on a planet with finite resources. A linear economy exhausts raw materials and energy, which results in CO2 emissions—worldwide, 85% of energy comes from nonrenewable sources. 2