Realize that in an ecosystem, living things and their nonliving environment are working together in a symbiotic relationship to help maintain each other.
Know that the major ecosystems on the earth, called biomes, each have their own unique environments and organisms.
Build a Terrarium: Each student (or group) will need a clear, watertight container, like a large pickle jar, with a lid; some gravel; some potting soil; a plant, like a small fern; and some water. Be sure that the jar is clean and dry. First, pour a small amount of gravel into the base of the jar. Then, add enough potting soil so that the jar...