Lakes are formed by precipitation and runoff, and runoff from precipitation is a natural part of the water cycle. Given these facts, what are some of the steps that forms a lake among the following options:
- decomposition and respiration
 - storing water
 - photosynthesis and solar energy
 - near the shoreline
 - precipitation and run-off
 - perspiration and excretion
 - The area was once underwater
 - At the peak of a mountain


 

     precipitation and run-off    