Which of the following is a true statement about the map? (3 points) The border between Washington and Oregon is a thin, black line; this indicates a national boundary.
The border between Iowa and Nebraska is a thin, blue line; this indicates a natural river boundary.
The border between Mexico and Texas is a thick, black line; this indicates a state boundary.
The border between Canada and the United States is a thin, black line; this indicates a national boundary.

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.