Anaerobic means that there is no oxygen present. So how does food waste rot without oxygen? In anaerobic decomposition, bacteria that like this sort of environment work to break down the food waste. These bacteria have been around since long before plants existed!
When the bacteria break down the organic waste, the process releases methane and other gases such as carbon dioxide. These gasses are known as biogases, and can be harnessed as a source of energy. In this experiment, you’ll learn how to make biogas by creating an anaerobic environment and seeing how effective different types of fruits and vegetables are when it comes to creating methane.