Exercises (1)What is pest? Would you please list four main pests? (2) Which pest is the most prevalent onboard? How to prevent it? (3)How to control houseflies and mosquitoes (4)Would you please list four main food areas?7 Exercises (1) What is pest? Would you please list four main pests? (2) Which pest is the most prevalent onboard? How to prevent it? (3) How to control houseflies and mosquitoes? (4) Would you please list four main food areas?