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The balance includes both the fees for service and the shipping charges. is this sentence incomplete or complete?

According to the study, a is when you string one quote after another in an essay without connecting them

Which best compares the authors’ purposes in silent spring and “save the redwoods”? both authors want readers to protect human rights. both authors want readers to focus on saving trees. both authors intend to entertain readers with their essays. both authors intend to convince readers of their viewpoint.