If oxygen is not present what happens after the process of glycolysis?

Which of the following systems in absorbing oxygen and releases carbon dioxide

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Select the word from the list that best fits the definition a system made of 25 satellites