The phylogeny tree above is used to explain what major idea/component of the biological theory of evolution?
Question 3 options:

All organisms are closely related.

All organisms began as flies.

All organisms share common ancestry.

All organisms lived in the same type of environment.

The "tips" of the tree branches represent the taxa in the study.

Taxa may be at any taxonomic level - orders, species, populations, etc.

These taxa may be called OTUs, or Operational Taxonomic Units.

The lines within the tree are called the "branches".

Explanation:

substitution is the answer in this case

genetic variation will increase because of a new habitat and food source.

explanation: