Which of the following is not an era in the phanerozoic?

Use the distance formula to determine weather each pair of segments have the same length

The largest unit within which gene flow can readily occur is a

Homo heidelbergensis was a tall, muscular hunter, who used both tools and weapons. because h. heidelbergensis was not a gatherer/forager, but ate a varied diet including meat and fish, we would expect to see what anatomical changes?