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Elenna [48]
2 years ago
6

HELP ASAP

Health
2 answers:
Marizza181 [45]2 years ago
7 0
The skin...that makes sense
Lelu [443]2 years ago
6 0
Skin, tears , mucous, are part of the first line of defence in fighting infection. They help to protect us against invading pathogens
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