Did you know that
where I’m standing
used to be a pond?

How do you think it
  became a forest?

      If I showed you
pictures of the pond changes, could you put them in the right order?

        Let’s try it out.
Drag each picture into
the space where you think
it goes. Rearrange them until you think they are in
        the correct order.

When you think you
have them arranged correctly, check your

    Oops! Try

Click “Continue” to
see a slideshow of the         changes.

Of course, the changes didn’t happen overnight.
The transformation took a long, long time.

   Click “Continue” to
see if you can answer a
  question about pond    succession correctly.

Choose the summary below that most accurately describes how a fresh-water ecosystem, such as a pond, can change to a terrestrial ecosystem.





Factors such as wind and animals introduced new plants to the area, which kept the soil from eroding.

Over time, weathering, erosion, and decomposition developed soil that gradually filled in the pond.

Bulldozers clearing land for new homes in a nearby area moved soil to the pond area, which displaced the water.

Over several years of drought, the water gradually evaporated and wind blew additional soil into the area, filling in the pond.

Now you know how pond succession can create a
   totally different habitat.