PLZ HELP 20 POINTS Which belongs in the area marked X?

Energy is released.
Oxygen is used up.
Glucose is broken down.
Carbon dioxide is used up.

2. which is the last step in the scientific method?

Tom wants to conduct a scientific study but he needs to finish by the end of the school year. what practical way could tom work around this limitation and be successful in his study?

What is the goal of cellular respiration