1. charging an official with a misdeed (a crime): impeachment
2. chosen; appointed (suggest someone for an election, job): nominated
3. to improve; to change: to make into a better quality: amended
4. reverse; change to the opposite position: overturn
5. whether the law or act is constitutional: constitutionality
6. court determination of constitutionality of laws passed: judicial review
You could drive less often by taking a bus or carpooling to reduce gas emissions. As well as using re-usable items like a metal water bottle, and your own personal bags at the grocery store.
