Which type of paint works best to keep a bridge from rusting

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

What does 2[tex] {2}^{ - 4} \times {2}^{ - 2} [/tex]

What type of coastline is commonly found along the western side of the america’s