When identifying the agent responsible for causing a disease, why is evaluation of colony morphology not enough?

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."

Long term exposure to waves can cause sunburns and skin cancer.

Long-period comets come from the oort cloud particles in earth’s atmosphere material from the asteroid belt the kuiper belt