How many distinct entities or structures do you see participating in the process?

What is the best-known carbohydrate?

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."

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast