5. How many food groups are you responsible for eating from?

Light waves travel than sound waves.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.