External barrier is any external palisade/domain that secures the internal contents or concepts either as concrete/discreet or abstract forms. 1.Physical external barriers mean barricades/fences from any internal domain. 2.Social external barrier means all socio-cultural elements that are confined within a community/society that prevents any external influence. Other external barriers: 1.External Psychological barrier 2.External cognitive barriers 3.External Business economics/Finance barrier.
1)external barriers 2)nonspecific responses 3)specific responses
Skin
Inflammation and fever are nonspecific immune system reactions.
I'm having a bit of a problem accepting your nonspecific example.
Skin cells.
The Great Barrier Reef poses no threat to any species. It is the species that already live within the waters of the Great Barrier Reef that are under threat from external sources.
External defenses - Includes skin and mucous membranes. Internal defenses - Includes phagocytic cells, inflammatory responses, and antimicrobial proteins.
language barrier poor infrastructure in some countries
Your body's most important nonspecific defense is the skin. Other nonspecific defenses include mucus, sweat, and tears.
Specific!
external