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Across 4. US Embassy in Tehran siezed by Iranian students and held hostage for more than a year 5. CIA breaks into Democratic Party headquarters 10. protects threatened species; signed by President Nixon in 1973 11. organization of petroleum exporting countries 12. relaxing of tensions with Soviet Union

Down 1. sets air and water pollution standards; created by Nixon 2. areas of Northeast and Midwest with coal and iron resources; center of American industry 3. Isreal agrees to return Sinai Peninsula to Egypt; Egypt signs peace treaty with Isreal 6. created the Nuclear Regulatory Commission after 3 Mile Island and Department of Energy 7. president associated with the Watergate Scandal; resigned from presidency 8. west and south 9. appointed vice-president after Spiro Agnew resigns; becomes president when Nixon resigns