Of the 668 respondents, 432 said that they are concerned about the environment. Ten years ago, in response to the same question, 378 of 703 respondents expressed concern for the environment.
Has environmental concern risen over the 10-year period?

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The Answer of Of the 668 respondents, 432 said that they are concerned about the environment. Ten years ago, in response to the same question, 378 of 703 respondents expressed concern for the environment.
Has environmental concern risen over the 10-year period?

Of the 668 Respondents, 432 Said That They Are Concerned