Ecotower Obseration #3 4/8/11

1. Betta fish ( we have one that is alive)
Crickets ( We put six crickets in at first and now all are dead)
Snails ( Two snails in the ecotower are dead now)
Worms ( The three that we put in their are buried in the soil and don't know if they are dead or alive)

2. We think that the algae is still good and keeping the fish alive. We think the animals up at the top died because they weren't getting enough oxygen and the plants were beginning to die. But the worms are still unknown because we can't see anything to tell if they are dead or alive. Then the snails died and the snails shells were floating at the bottom of the bottle.

3. Bean plants (The three bean plants grew tall but are starting to die)
Algae ( Stayed alive but are turning brown)
Other plants ( The plant that was alive in our first observation is starting to die)

4. We think that the bean plants and other plants are starting to die because they are not getting any carbon dioxide. We also think the algae is turning brown because it isn't getting enough oxygen.

5. The water is getting a little darker yellow tint with particles floating around in the water. Plus some of the algae is turning brown and sinking to the bottom.

6.

7. I predict that most likely the fish will die next since the algae is beginning to die. The fish might live but eventually it will die. I think the plants up top will die since their not getting into carbon dioxide.