a.) Constructing the ecocolumn
1.Gather materials
2.Cut soda bottles so that there are 3 sections that are the top of the bottles one section that is from the bottom and 3 that are from the middle
3.place the bottles togeather so that the bottom part is on the bottom the middle sections fit togeather above that and the top sections fit inside
4.poke holes into the bottle cap
5.put filters in the bottle caps
6.put sand into the lowest section with gravel above it
7. plant algea into the lowest layer
8.fill the lowest layer with water
9.cut a small square at the top of the lowest layer
10.add decomposition to the second layer
11.add soil and grass seed to the third layer
12.tape the layers togeather
13. test the ecocolumn for turbidity, dissolved oxygen, nitrates, tempurature, and coliform bacteria every two weeks
14. record data
15. add 2 cups of water every 2 weeks
