We see the moon because the sun's light reflects off it. So the phases change depending on how much the sun reflects of it. The moon circles around the Earth so at certain times there will be a full moon and at certain times a new moon and everything in between.
Answer:
A
Explanation:
An isolated system can NOT exchange energy or matter with it's surroundings. This is why it is isolated.
<span>A six-carbon sugar is an example of a molecule </span><span>that can join with other molecules to form a carbohydrate such as starch or cellulose.</span>
