Answer:
That cells are not the building block of life
Explanation:
General steps from beginning to end:
1) Glycolysis
2) Pyruvate Oxidation
3) Citric Acid Cycle (Krebs Cycle)
4) Oxidative Phosphorylation
Hope this helps!
The question is asking to state the substance that come from the outside in the process of photosynthesis, base on my research and further investigation, I would say that its the heat or light energy. I hope you are satisfied with my answer and feel free to ask for more