The End 5-20-13

Today was the final day of our ecosystem in a bottle. Things were not looking to well for the ecosystem the past few days. The onions had shriveled up and they were drooped over. We cut the bottle open today were we had sealed it up before. There was a rush of air as the oxygen inside it escaped because of the pressure it had built up. The first thing we noticed was the horrible stench that came with it. It was the smell of rotten onions. Prodding the onions with a needle we discovered that they were really moist. They were in the process of decomposing. They leaves that we had in top of the dirt were really moist as well. Doing further research we dumped the rest of the contents out onto the ground. The gravel that we had on the bottom of the bottle was wet but there was no water in there. The soil was damp, we searched for the worms but they were nowhere to be found. We did find good root growth in one place, there was a root about 3 inches long. There was mold on the very top of the soil.

If we could do this again, the one thing that I would change is that it would need more carbon dioxide, which means more organism that give that off. I would also put less onions in the ecosystem. The 4 onions we had used up the entire amount of carbon dioxide and put out oxygen and because our worms died there was no carbon dioxide being made and if there was, it would not be enough for the onions to grow.

The End