Air Pollution by Ms. Duman's Class

We did an experiment to test if the air around our school was polluted. We put vaseline inside a cup and then decided to put it outside our window. We also left a cup inside, to see if the air inside was polluted. We left the cups for 2 weeks to see what would happen. The cup left inside was clean and clear. The ones left outside had turned yellow. There were little black spots inside. It also smelled VERY BAD like car exhaust. We also found little bubbles inside the vaseline. Our air is polluted! WE need to stop putting smoke in the air. Instead of driving, we will ride our bikes and skateboards instead. We should also stop making factories. We will tell our parents to drive less and put up signs to tell people to walk instead of drive. We need to stop polluting the air.