What is the nearest ten cents of 550.45 is

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.

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

An example of maslow's need for safety is reaching goals through self-discipline