What does skin help keep out?
medicine sun's heat heat hurtful words a pathogens parasites harmful substances Echinoderm.
A B C D E F G H
Skin is a protective organ.
Skin helps keep out harmful substances
What does skin help keep out? (A) medicine (B) sun's heat (C) heat (D) hurtful words (E) a pathogens (F) parasites (G) harmful substances (H) Echinoderm.