Which health problem may be related to air pollution? a. gastrointestinal illness b. cardiovascular disease c. early dementia d breast cancer

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

Hand washing is an important behavior that can cut down your chances of becoming sick with a communicable disease. select the best answer from the choices provided. t f

Traffic patterns refer to: how you move through a space hallways how rooms are connected to each other how rooms are organized