Answer:
a and i already answer this
Explanation:
Hello Pgoodrichstat!
The process that helps gas exchange occur is called diffusion.
Cheers!
-Blizzard
Answer:
The nerves in the integumentary system (skin) sense the irritation and send the signal to the brain. The brain then sends impulses through the nervous system to scratch the itch.
Explanation:i hope this helps u :)
I believe it is muscle cells, I'm sorry if this is incorrect.
