Abiotic Components

Temperature (Degrees Celsius)	Date and time
24	14th Of February at 11am
20	21st of February at 9am
21	28th of February at 12am
24	4tth of March at 10am

P.H on Universal indicator	Date
10.0	28th of February
10.0	4th of March
10.0	7th of March

Temperature of room (Degrees Celsius)	Date and time
22	28th of February at 11am
25	4th of March at 11am
20	7th of March at 9am

Why is our eco-column self sustaining?

The eco-column is self sustaining because there is a terra, decomposition and aqua layer. In the terra layer, there are small weeds which, using sunlight, will photosynthesise and produce more oxygen and water. The small centipede living in the terra layer can live off the many woodlouse in the layer which will hopefully reproduce to create more food. Therefore the cycle repeats and is self sustaining.

Contributions 
We all contributed towards the Eco-column we all built and stocked it together.

Stocking the Eco-column 
Terra layer: 
For the Terra layer we used some weeds we found in the garden we used the same soil the plants were in originally, we also used gravel from Darren's house we put in a millipede a centipede and some wood lice.


Decomposition layer: 
We used decomposing material from Rissik's worm farm and a bit of worms also some gravel again for the filtration of the water.


Aqua layer: 
We took water from the "green belt" for the aqua layer and some gravel for the insects and organisms.