Question

Classify the following as either a specific or a nonspecific defense of the body's immune system. • skin
• macrophages
• bacteria • mucous
• fever
• B cells • T cells
• antibodies

Answer 1

specific-b cells, t cells, antibodies 
non specific- mucous, fever, macrophages
Bacteria is not a defense, it is a pathogen that causes an immune response.
I had this homework before, and I got a perfect score. These were my answers. :D

Answer 2

 • Skin   •macrophages          -Non specific

• mucous  •fever

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• B cells • T cells        -Specific

• antibodies  • bacteria

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Hope it helps :)