Identify how the physical barriers of the immune system protect the body against pathogens. Check all that apply. your nose produces oil to keep pathogens from entering the body through your noseskin contains tightly packed cellsskin is tough, flexible, and waterproofyou cough when a pathogen enters your mouthyou sneeze when a pathogen enters your nose

Explanation:

The physical barriers of the immune system prevent infections since they stop or expel any pathogen that enters the body. The skin with its cells tightly packed and characteristics, the endothelia, and mucous membrane, like the one in our nose, are physical barriers. They stop antigens from infecting our body since they can remove them by sneezing, coughing, or shedding.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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