6. What will happen to the people living in a place where pests are dwelling? * 1 punto A. They will suffer skin allergy and other respiratory diseases. B. They will experience difficulty in breathing. C. The water supply will not be safe. D. The land will become polluted. 7. What is the effect of the surrounding covered with smoke from factories, motorized vehicles, ashes, and dust particles? * 1 punto A. Air pollution B. Land pollution C. Water pollution D. Noise pollution 8. What causes lung infections, cancer, and other respiratory diseases? It is caused by polluted________________. * 1 punto A. air B. land C. water D. backyard 9. Which action is resulting to harmful effects to the water? 1 punto A. cutting down of trees B. smoke belching vehicles C. dumping garbage on the soil D.throwing chemical wastes in the bodies of water 10. What is the effect of cutting down trees in the forest without replacing them? * 1 punto A. Soil erosion is avoided. B. Flood can be prevented. C. Forest will be preserved. D. Low-lying areas get flooded.
