Create Your Own Marsh!
For this experiment you will need:
The wet soils have very little oxygen available. Living things need electron acceptors and a source of carbon. We humans (and other aerobic animals) use oxygen as an acceptor. In environments that are short of oxygen (such as wetlands) organisms (especially microorganisms) that can use other elements as acceptors do so. Alternative electron acceptors include manganese and sulfur. Evidence of the use of manganese and sulfur include precipitation of manganese oxide (the black material) and the formation of hydrogen sulfide gas (which smells like a rotten egg).
Why is there a heightened effect in tube A
What is the purpose of tubes B and D
Do elements that are electron acceptors change from a more negative charge to a more positive charge or more positive to more negative
For more information on this topic, read a chapter on electrochemistry in a chemistry textbook. Also read about anaerobes in a biology textbook. Can you think of other ways to learn more?