One of the themes of the American History II course is the tension between change and the interests of powerful groups. Based on the article, how did powerful groups resist change during the 1960s-1980s?

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Whether or not a given study has the possibility of causing harm to participants:

Which statement below accurately describes the carrying capacity of any ecosystem? a. it is not affected by any abiotic or biotic resources. b. it does not affect the species of an ecosystem. c. it is completely dependent upon the food supply. d. it is affected by both abiotic and biotic resources