Answer Hint: Public Health is the science and art of preventing disease, prolonging life, and promoting health through organized community efforts. Levels: Primordial (preventing risk factors), Primary (preventing disease onset), Secondary (early diagnosis and treatment), Tertiary (disability limitation and rehabilitation). (Park's Chap 1, 2)

Answer Hint: Levels of prevention: Primordial, Primary, Secondary, Tertiary. Modes of Intervention: Health Promotion, Specific Protection (Immunization), Early Diagnosis and Treatment (Screening), Disability Limitation, Rehabilitation. (Park's Chap 2)