INSTRUCTIONS: 

Answer all questions. For each question, your answer should be detailed, not exceeding 300 words. Supporting your responses with current examples will earn you more points. 

1.Discuss why there has been an apparent reversal in early successes in insect control leading to marked increases in insects in many parts of the 

2. List four factors that are responsible for emerging infectious disease. 

3. 5. List several factors that are commonly found to be the cause of food borne outbreaks that are otherwise largely preventable. 

4. Discuss water supply disinfection and the benefits and dangers of chlorine: 

5. What is the Greenhouse effect? 

6. Discuss at least 4 consequences of the inappropriate disposal of refuse.