What do grey pentagons represent?

Which animal group is the largest and contains more species from all the other living groups combined? is it mammals or

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?