What happens to the amount of energy as it flows up the food chain?

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

  the mississippians were considered to be  horticulturalists, which means they were