What is the largest source of sulfur dioxide air pollution? a. transportation b. the greenhouse effect c. burning fossil fuels in vehicles, power stations, and factories d. construction, agriculture, and unpaved roads select the best answer from the choices provided?

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.