Energy ⁽¹⁾

A lot of energy comes from nonrenewable energy resources which include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced. Due to our high reliance on energy this is a problem for both society and the planet. 

Alternatively, energy from renewable resources has a much lower carbon footprint as they naturally replenish themselves over time, like wind, solar, plants, trees, etc.