A flexible but non elastic cord of strong collagen tissue attaching muscle to bone​

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.

Which of the following is a health risk associated with ground-level ozone? a. cataractsb. skin cancerc. respiratory illnessd. all of the above

What can friends provide to affect mental health positively? a)peer pressureb)challengesc)conflictd)com panionship