Which word can be a noun or a verb?

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Drama

How can behavioral science be applied in improving public health? a.by tracking a disease to determine its sourceb.by creating promotions that improve health habitscboth by tracking a disease to determine its source and by creating promotions that improve health habitsd.neither by tracking a disease to determine its source or by creating promotions that improve health habits

Which statement describes the central idea of the text in the story learning about the holocaust

According to the article "clemente's impact wanes in puerto rico 40 years after his death," what happens in puerto rico in 2012 to celebrate the anniversary of clemente's 3000th hit?