&start=Press Start to begin
&part1=There are many different causes of weathering. Acid rain is one of them.
&part2=Biological weathering occurs when living things cause rocks to break apart.
&part3=As weathering occurs, tiny fragments of rock break off.
&end=Press Start to play the animation again.

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&info.info1=Press the Start button to watch the animation. At any point you can press the Pause button. Press the Menu button to go back to the main menu.