Which question could be answered using the process of scientific inquiry? Why do tuna exist?
What food do tuna like to eat?
When will all of the tuna be gone from the ocean?
How has the average size of tuna changed from year to year?

As a small change in a person's dna can cause a genetic disorder

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."

When plants use sunlight to make food, the energy of sunlight is