The autonomic part of the brain controls involuntary actions of the internal organs. :D hope this helped!!
Um...they become contaminated too, it's just a matter of determining the amount of contamination in the water in ppm & rate of absorption in the organism.
Answer:
Its mucus
Explanation:
Mucus is what makes a frog feel slippery or slimy. Frogs don't drink water, instead they absorb it through their skin. Frogs also use their skin to breathe. A layer of mucus on the skin helps keep moisture trapped next to it, and this moisture transfers oxygen into the frog's body.
I think it is organic compounds
