Why do we see different phases of the lunar cycle?

Because of the shadows vary because the earth is revolving and the moon is as well. The shadows shift because the sunlit side can change because the moon is moving too

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called