Answer: D
Explanation: because they are in the military and that’s the only law I would recommend if someone needed discipline in the military
Answer:bromine
Explanation: because im smart and i did this already so i know the answer so your welcome :D
Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
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