Claim: Plastic bags should be replaced with paper bags because they are better for the environment.
To support this claim, I can collect several forms of evidence. First, I can find scientific studies that show how plastic bags contribute to pollution and harm wildlife. I can also look for statistics on the recycling rates of paper versus plastic bags. Additionally, I might gather opinions from environmental experts and read articles from reputable sources about the benefits of using paper bags. I would look for this evidence in online databases, library books, and credible websites focused on environmental issues.