Which of the following organic molecules is a source of carbon, nitrogen, and phosphorus

How will technology impact medicine in the future?

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 would be the most useful source of evidence to support mcneill's contention?