Explain the meaning of racism and why it is considered dangerous​

When developing a written argument, what best explains why an author would use a graph as a source? a graph gives numeric evidence visually. a graph is easy to read and understand. a graph is colorful and will engage the reader. a graph can be used to refute an argument.

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Has anyone ever read the poem “at a window “ by carl sandburg? there are a few multiple choice questions i have to answer about it.