II- Choose the best word: 1. People throw litter on the ground. (And / Due to / Therefore ) , many animals eat it and become sick. 2. Oil in ships spills into oceans and rivers , (lead /so/ cause) many aquatic animals and plants die. 3.The river is polluted (so/ because/ because of) households dump waste into it. 4.(Beause/ Because of/ Due ) the parents’ radiation, their children have birth defects. 5. We can’t see the stars at night (Because/ Because of/ Due to) the light pollution happens. 6. People cough ( because/ because to/ due to) the fumes from cars. 7. The polluted soil (cause/ results to/ leads to) the death of plants . 8. We won’t have fresh water to drink (because of/ because in / since) the water is polluted . 9. Planting trees (helps/ results/ make) us have fresh air. 10- The animals died (as/ because of/ due in) contaminated water.