What is a phylogenetic tree?

A phylogenetic tree is a branching diagram or "tree" showing the inferred evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics.

Explanation:

A phylogenetic tree, also known as a phylogeny, is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor.

c. heat from the poles back down towards the equator.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.