It is important for a person to include

The world’s richest 20 percent of the population consume about what percentage of all goods and services in a given year?

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.

Identify two ethical principles that can teens deal with difficult decisions