I found the choices elsewhere and it is as follows:
-Put a few plants, water, sand, and a heat lamp inside a clear glass aquarium and seal the top. Place it in a sunny location.
-Put water, fertilizer, soil, plants and insects in an open, clear glass aquarium. Place it in an area that has some sunlight and some shade.
-Put rocks, water, and many plants in an open, dark-colored plastic tub. Place it in an area with direct sunlight.
I think the correct answer from the choices listed above is the second option. The method that would most likely result in an ecosystem that is viable for the longest amount of time with no additional care would be putting water, fertilizer, soil, plants and insects in an open, clear glass aquarium. Place it in an area that has some sunlight and some shade.
