<span>Agricultural waste used as a fuel is an example of biofuels, there already different kinds of biofuels that came from agricultural waste, the most common are the biogas and bioethanol. biogas are produce when agricultural waste such as poultry manures and grassy waste are fermented to create biogas. while biothanol uses sugar rich agricultural waste to make ethanol</span>
You put your 5 fingers up then you put 4 fingers up on the same hand
Earthquakes does not belong because it is not an electromagnetic wave.
It would be 0.25 meter or one fourth of a meter
