In this outline of a cladogram, the numbers 1 to 4 each represent a species. Which part of the cladogram represents the most recent common ancestor of species 1 and species 3? Select the correct answer.

Which units ate used to measure both velocity and speed? check all that apply

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

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."