Which scenario would most likely lead to a higher level of physical fitness among people who live in a city

Mucous membranes.. a. cover or line external surface of body. b. line internal body surfaces that are in contact with the environment. c. produce antibodies to combat infection. d. secrete sweat, which has antibacterial enzymes.

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

The frequency in wich you perform certain exercise depends on the blank of the exercise