Im bored and sad : ( : ( : (

Recovery heart rate is to determine how fast the heart recovers and should be measured five to ten minutes after vigorous activity. true or false

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.

The goal of the flu vaccine is to prevent you from becoming infected with influenza. select the best answer from the choices provided. t f