9: Causative Agents and Acid Deposition - Comprehension Test

What are the agents and pollutants that give rise to acid deposition? Choose the explanations below that you think are correct.

Acid deposition arises only from natural causes.	False. Causative agents develop not only from natural activities, but also from human sources such as factories and cars.
Some causative agents are dissolved in water droplets, and others fall to the Earth's surface in the form of gas or fine particles.	True.
Burning coal causes acid deposition, but burning oil does not.	False. Combustion of all fossil fuels (coal and oil) causes acid deposition.
Pollutants once released into the atmosphere do not return to Earth surface.	False. Pollutants released into the atmosphere return to ground with rain or through other deposition processes.
The formation of acid deposition can be divided into three major processes: emission, transport, and deposition.	True.