Answer:It would be all of them
Explanation: Because they all give ideas on how "could a school reduce its use of energy resources
The answer to your question is true
Explanation:
I don't know, but an ionic bond is a bond between a cation and an anion.
Cations are ions with positive charge, white anions are ions with negative charge.
For example, sodium chloride, NaCl, has an ionic bond between the Na+ and Cl- ions.