Answer:
potassium contains both Ionic and covalent bonds
Hydrogen and Oxygen by themselves have 1 and 6 valence electrons, respectively. 8 valence electrons is stable, so the atoms form bonds with each other to achieve 8 valence e-.
1 H atom + 1 H atom + 1 O atom = 8 valence e-
Plants don't need sap. They make it like Maple trees.
The correct answer is Gems are rare
The answer would be A from what I know