When blood first reaches the lungs it contains... A: High levels of carbon dioxide
B: Low levels of carbon dioxide
C: No carbon dioxide
D: It depends on the temperature

* 20 points

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?