In order for the Constitution to be changed, an amendment must be Select one: Oratified by two-thirds of U. S. citizens.
Oproposed by a two-thirds vote in the U. S. Senate and House of Representatives.
Oratified by two-thirds of the state legislatures. Oproposed by a convention called by Congress on the request of three-quarters of the state legislatures.

Click on  the link  to view information gathered by the organization keep america beautiful. read "the costs of american littering" to find three negative effects of litter in local communities.  based on your research, what are the negative effects of litter in local communities? check all that apply.litter cleanup is very expensive.litter has decreased since 1969.litter is a constant community problem.litter causes property in the community to be less valuable.litter contaminates water and has other environmental consequences.