3. What are three signs of drug dependence?

Which description shows the best balance of physical social and mental/edmonton health

Does anyone know how to dissect a frog or baby squid?

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.