What are many chemical messengers that control body functions?
gasses photons acetic acid flames heat or cold chemical waste proteins sweating
A B C D E F G H
Many hormones are proteins .
many chemical messengers that control body functions are proteins
What are many chemical messengers that control body functions? (A) gasses (B) photons (C) acetic acid (D) flames (E) heat or cold (F) chemical waste (G) proteins (H) sweating