Ecosystem in a Bottle

While learning about how plants and animals depend on each other we created an ecosystem in a bottle. We created a pond complete with water plants and an aquatic snail. Then we created a land area with soil grass seed and pill bugs. The grass seed grew quickly by receiving water from the pond and the pill bugs ate the nutrients in the soil, while the aquatic snail ate the aquatic plants. This taught the students how a pond ecosystem works.