- The virus finds an animal cell - The virus attaches to the cell's surface - The cell swallows the virus - The virus' RNA is released into the cell - The cell mistakenly reads the virus' RNA instead of its own - The cell creates new viruses - The animal cell releases the new viruses What might be the last step of the process?
Ans: The new viruses can infect more cells.

- Networks of trees start forming - The trees die off - The dead material provides nutrients for more trees - The rising trees provide shelter - And more organisms begin to thrive What might be the last step of the process?
Ans: The ecosystem known as a forest is made.

- Water seeps into rocks - The water freezes and thaws - Cracks form in the rocks - Cracks also form when rocks heat up What might be the last step of the process?
Ans: The rocks slowly break down.

- Boil salt water - The water will turn into water vapor - Collect the water vapor - Allow the water vapor to cool - The water vapor will turn into liquid water What might be the last step of the process?
Ans: The salt will be separated from the water.