Q: -  The consumer throws aluminum cans and foil into a recycle bin - The aluminum is collected - Taken to a treatment plant - The aluminum is sorted and cleaned ready for reprocessing - The aluminum is re-melted - Turned into molten aluminum - The aluminum is made into large blocks called ingots - The ingots are sent to mills to be rolled out  What might be the last step of the process?
A: The rolled out product is made into new aluminum products.

Q: -  You breathe oxygen into your body through the nose or mouth - The oxygen travels to the lungs through the windpipe - The air sacs in the lungs send the oxygen into the blood stream - The carbon dioxide in the blood stream is transferred to the air sacs  What might be the last step of the process?
A: The lungs expel through the nose or mouth back into the environment.

Q: -  A forest fire starts - The trees and plants burn - The animals lose their homes - If the animals can not escape, they may die from smoke inhalation - The plants that provide food are gone  What might be the last step of the process?
A: The animals have little to eat

Q: -  The sun gives off radiation - The radiation is aborbed by the Earth - Some of the radiation goes back into space - Some is trapped by the atmosphere - If too much heat is trapped  What might be the last step of the process?
A:
Global warming occurs.