input: Please answer the following: -  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?
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output: The ecosystem is out of balance, causing further problems


input: Please answer the following: -  A red giant burns mass - This mass creates high core temperatures - The mass decreases - The red giant can no longer fuse the carbon and oxygen in its center - The gravity of the star can no longer hold the outside layers - The layers break away - Only the inner core remains  What might be the last step of the process?
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output: This inner core is known as a white dwarf.


input: Please answer the following: -  The saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow - Your tongue helps out, pushing the food around while you chew with your teeth - The esophagus moves food from the back of your throat to your stomach - Strong muscles in the walls of the stomach and gastric juices break down food in your stomach  What might be the last step of the process?
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output: Your stomach moves the food into the intestines to complete digestion


input: Please answer the following: -  Air enters the lungs through bronchial tubes - Air enters bronchioles - Bronchioles have tiny air sacs called alveoli - Alveoli surrounded by small blood vessels - Oxygen absorbed by small blood vessels - Vessels deliver oxygen to every cell in the body - Blood brings carbon dioxide back to lungs  What might be the last step of the process?
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output: