A terrarium is a collection of small plants growing in a transparent, sealed container. A terrarium is a closed environment, and can actually be used to illustrate how an ecosystem works. Inside a terrarium’s walls, many different natural processes may be observed: photosynthesis, respiration, and the water cycle. The water in the terrarium is constantly recycled, passing from liquid form to gas and back again. As the moisture in the air condenses on the glass walls, it returns to the soil and is absorbed by the plants’ roots.

Materials you will need:

1. Clear glass or plastic container-- in this case use a recycled 2 Liter soda bottle!

2. Small stones -- they will act as an aquifer (underground layer of rock where water can be stored)

3. Activated charcoal (from aquarium or orchid supply store) -- this is optional but highly recommended if you want your terrarium to last a really long time!

4. Your plants-- google "what are the best plants to use in a terrarium" to find good plants to use for your own terrarium!

5. Potting soil Plants

6. Decorative objects (optional)