- Sunlight strikes the chlorophyll molecules in the plant - Is trapped - Plant also takes in water and carbon dioxide from the environment - The plant forms glucose What might be the last step of the process?
Ans: The plant releases oxygen into the atmosphere.

- Get the ice tray - Remove any ice cubes currently in the tray - Fill the tray with cold water - Ensure the tray is evenly filled to an appropriate level - Open the freezer - Place the tray in the freezer - Close the freezer door What might be the last step of the process?
Ans: Wait.

- Minerals fill spaces between bits of sediment - The sediments become glued together - The glued together parts become hard like cement - The sediment becomes a big rock - The rocks erode slowly - The rocks come apart - The rocks become smaller rocks - The rocks continue to erode into smaller rocks What might be the last step of the process?
Ans: The process starts again.

- People dig up coal from the ground - People burn coal for heat or electricity - Pollution from the coal goes into the sky - Coal pollution enters clouds - Clouds rain over an area What might be the last step of the process?
Ans: The polluted rain becomes acid rain.