The only way to see the far side of the moon is

The side of the Moon we do not see from Earth gets just as much sunlight on it as the side we do see. In truth, the only dark side of the Moon is the side that is pointed away from the Sun at any given time.The moon's mysterious far side is so much different than its near side, which we see in the night sky, and now scientists think they know why. ... In fact, observations have shown that only about 1% of the moon's far side is covered with maria, or craters caused by volcanic activity on the moon.

Ions gain or lose electrons

Answer    "a salt" would be the best answerexplanationsalts can be defined as ionic compounds that are neither acids nor bases. nacl is an example of a salt, and its ionic.an enzyme is an organic compound which is covalently bonded, not ionically bonded.acids are generally held together by covalent bondsan element does not need any bonds to exist