If your muscles begin to fatigue, they are using energy faster than making it. This is usually due to the lack of enough oxygen to keep up with the demand on ATP production. When this happens, what process acts as a backup for ATP production?

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound