directions:describe the harmful effects of the changes in the materials to the environment.write the letter of the correct answer. ___1.throwing garbage anywhere a.makes the soil fertile b.causes pollution c.makes plants healthy d.all of the above ___2.burning of plastics a.contribute to the greenhouse effect/global warming b.can lessen the wastes in the world c.makes the environment clean d.all of the above ___3.oil spills in the bodies of water a.makes the bodies of water clean b.makes the sea good breeding place for fishes and other animals linving in the sea c.makes the water contaminated which kills living organisms in the water d.all of the above ___4.smoke from factories,cigarettes,motor vehicles a.causes skin itchiness and respiratory infections b.maintain the temperature of the surroundings c.does not affect the quality of air that we breathe d.all of the above ___5.deforestation a.can provide firewood b.can produce logs and other materials fo house constraction c.can cause flood,lanslides and too much carbon dioxide in the atmosphere d.all of the above
