IF ANYONE HERE IS AT CONNEXUS AND IS WORKING ON THE PHYSICAL SCIENCE QUICK CHECK SOURCE OF LIGHT THE ANSWERS ARE
1 filament
2 Sodium-Vapor Light
3 Mercury Vapor
4 All neon lights are colored by the color of the tubing
Thanks me Later

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )