Because they do not possess the same vocal cords arrangement as Humans.
<span>Barking cause lower amount of muscle strain in Vocal cords compared to when humans are yelling.
</span>This make dogs able to barks endlessly without having to create any damage on their vocal cords.
The correct answer is D (is the best way to prevent injury in sports that call for such equipment).
2 Reasons they had to leave was 1. They were sold to cocasion/white owners and they had to leave, and 2. The cocasion slave owners felt that the a african americans didn't belong so they took them and beat them and stuff like that. (that is cruel man) Happy to Help! :D
Anthropologists conduct scientific and humanistic studies of the culture and evolution of humans. Each of the four fields of American anthropology has its own skills, theories, and databases of special knowledge. Most anthropologists, therefore, pursue careers in only one of the four subdisciplines.