Answer:
the federal government
Explanation:
individuals dont build roads that often and private companies wouldn't have much reason to build roads either.
It was how Earth Day came to be celebrated and was how things like the Clean Water Act, the Clean Air Act, the Endangered Species Act were passed and the Environmental Protection Agency was created to help clean up chemical waste and any other pollutants. Obviously without these things we’d have a huge problem and we depend on them greatly if you think about it.
disease is the correct answer