Please answer this: -  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 - The sulfuric acid makes the rain acidic -   What might be the first step of the process?
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Answer: Coal is burned


Please answer this: -  The liver uses chemicals and proteins to treat the blood - The blood is cleaned - Energy is produced - The blood leaves the liver cleaned.  What might be the first step of the process?
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Answer: Blood is sent to the liver


Please answer this: -  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 - Take the pot off of the heat source.  What might be the first step of the process?
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Answer: