Identify how the physical barriers of the immune system protect the body against pathogens. check all that apply. 1. your nose produces oil to keep pathogens from entering the body through your nose 2. skin contains tightly packed cells 3. skin is tough, flexible, and waterproof 4. you cough when a pathogen enters your mouth 5. you sneeze when a pathogen enters your nose

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

c

explanation:

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

idk lol use google m8