Answer: Air
Explanation: Brainliest please!!
Can we get a pic of the layers or no lol
If you don't recognize early signs of stress you might: 1. Feel completely miserable, 2. Be irritable, 3. Get things such as cold sores.
Hopefully this helps :)
There are two types of reflex arcs:the autonomic reflex arc, affecting inner organs, and the somatic reflex arc, affecting muscles. When a reflex arc consists of only two neurons, one sensory neuron, and one motor neuron, it is defined as monosynaptic