Problem: - Coal is burned - Sulfur in the coal combines with oxygen to form sulfur oxides - The sulfur oxides are released into the atmosphere - The sulfides combine with oxygen in the atmosphere to form sulfur trioxide - The sulfur trioxide reacts with water in the atmosphere to form sulfuric acid, a very strong acid What might be the last step of the process?

A: The sulfuric acid makes the rain acidic

Problem: - 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?

A: They hear you.

Problem: - Acid rain makes waters acidic - Causes them to absorb aluminum from soil - The water runs off from the soil into lakes, streams, etc - Fish and their eggs die - Frogs and plants die - Insects and other wildlife die What might be the last step of the process?

A: The ecosystem is out of balance, causing further problems

Problem: - Bacteria enters the body - Bloodstream - Cells in the body are attacked - Cells are killed What might be the last step of the process?

A:
Different kinds of sickness are formed.