How does a bill that is proposed by the senate or the house of representatives become a law

the U.S. House of Representatives and the U.S. Senate still believe the bill should become a law, they can hold another vote on the bill. If two-thirds of the Representatives and Senators support the bill, the President's veto is overridden and the bill becomes a law.

Explanation:

answer; ///i believe that the correct answer is refrigerants,(like r12) and aerosol

would not cooperate with each other voluntarily.