Question: - Acid rain enters the atmosphere and lands - Makes water acidic - Kills fish - Kills the soils in trees What might be the last step of the process?
Answer: Leaves are also harmed.

Question: - Place the water in a pot - Cover the pot with a slightly too large cover - Place a larger pot under the first - Heat water to evaporation - Water vapor will collect on the lid - Drip into the second pot as fresh water What might be the last step of the process?
Answer: Salt is left behind in the original pot.

Question: - Water evaporates from the ground up to the sky - Water droplets are in clouds - The air gets cold - Water droplets turn into ice crystals What might be the last step of the process?
Answer:
Ice crystals in clouds stick together and become snowflakes.