Which statement explains why many scientists believe that carbon dioxide has likely contributed more to global warming than other greenhouse gases?

Which of the following energy sources is not an example of renewable energy? a. a wind turbine farm b. a clean-burning, coal-fired electric plant c. a hydroelectric dam d. a solar panel mounted on a home

Which of the following types of nonrenewable fuel sources requires the storage of radioactive waste? a. coal b. nuclear c. solar d. oil

Which two nations are doing the most to combat their environmental issues?