Anyone here do martial arts? I need to ask u some questions

Why would one lymph node in the neck be swollen and not the other? what causes them to swell?

Sarah’s friend had been binge drinking and was intoxicated. sarah immediately called 9-1-1, and then sarah tried to keep her friend awake and her sit up.

Explain why many people are concerned about uv rays? explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?