Answer:
carbohydrates
Explanation: its protein and fats for us
Hormones - they travel through the blood to other parts of the body. Hope This Helps!
No, not really because if nothing is near them they cant sense any type of danger. But if something is close they may be afraid but don't sense danger. It basically a spiderman myth.
Hope I helped!
- LILBLAKEYOUT
<span>They specialize in antigen presentation and belong to the skin immune system (SIS).</span>