contestada

The integumentary system _____.

is the first line of defense against pathogens
is made of white blood cells and lymph nodes
identifies antigens and produces antibodies
is part of the body's passive immunity

Respuesta :

kittensandcupcakes
I would go with A it is the first line of defense as it is exposed to the outside world unlike the rest of your body.
ENPH

The first option. I had this test.

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