Question: - You speak into the receiver on your phone - Sound waves move parts inside the receiver - Movement causes the magnet inside to produce eletricity - Electricity is transferred through a wire or cable - A membrane in the other persons phone is vibrated by the magnet in their telephone - Sound is produced What might be the last step of the process?
Answer: They hear you.

Question: - Add water to a pot - Put the pot over a source of heat - Turn the heat on - Wait for a few minutes - Begin to observe small bubbles in the water - Wait until the water starts to bubble a lot - Wait until you can see steam rising from the water - Turn the heat source off What might be the last step of the process?
Answer: Take the pot off of the heat source.

Question: - Acid rain is produced by chemicals that reach into the atmosphere - Falls onto the ground - The acid rain starts scouring rocks - Destroys vegetation What might be the last step of the process?
Answer:
The lack of vegetation alters the surrounding environment.