Which of the following is an ingredient in cigarettes? A. Nicotine B. Formaldehyde C. 200 known poisons D. All of the above

How does heroin affect cellular communication in the brain?

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Why is it often difficult to get funding for local parks? a. state governments do not like to grant permits for local parks. b. federal regulations prohibit most fund raising. c. there is often a small tax base. d. federal funding cuts have all but stopped local construction of parks.