The specific environment where an organism lives

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

Suppose you are facilitating an advisory group to address teen pregnancy. whom would you invite to the group and why ? .

Alot of ! why does society places such an emphasis on the value of physical health and wellness? what are the benefits of active living?