Decomposition

  Hello, again. Please don't pester me to make longer introductions. JUST SAYING.
          - Me

   Aim: To learn about the rate that different materials decompose. 

Hypothesis:

I believe that the banana will rot the fastest.

Materials:

1.   test tubes (large)
2.   test tube rack
3.   banana chunk
4.   cardboard paper/normal paper
5.   bread slice  
6.   styrofoam

Steps:

1.   Place a piece the bio-degradable materials in a test tube each.
2.   Do the same with the other non bio-degradable materials in a test tube each.
3.  Place test tubes in a test tube rack.
4.  Leave the test tube for 3 weeks.
5.   Record.
6.   Leave them again for 2 more weeks.
7.  Record.
8.  List down your conclusion.

Findings:

TODAY	Colour	Change	Observations
Banana	Light yellow	none	The banana is still yellow and delicious.
Paper	Brown	none	The paper is still brown.
Styrophone cup	White	none	The cup shard is still white and smooth.
Bread	White	none	I rolled the bread into a worm shape so that it would fit in the test tube.

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3 weeks	Colour	Change	Observations
Banana	Varies	Surface	The banana got covered completely in mold and almost completely decomposed. It also stuck to the test tube.
Paper	Brown	none	The paper has not changed colour or any characteristics.
Styrophone cup	White	none	The styrofoam hasn't changed one bit.
Bread	White	Surface	The bread at the bottom has melted almost like slime while the ones at the top has been covered with mold.

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5 weeks	Colour	Change	Observations
Banana
Paper
Styrophone cup
Bread

  

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Images:

Conclusion:

The _______ rotted the fastest because ______________________________________________.