Part 1: The four astronomical bodies would you choose to represent the four labels in the diagram are (A universe B galaxy C solar system D Mars) because a universe holds galaxys and galaxys holds solar systems witch holds planets like Mars
<span>Part 2: The hierarchical level D is different from the rest because D or mars is a planet and unlike all there other astronomical bodies it dose not hold other astronomical bodies with in it. </span>
It occurs at the equator mostly
Same thing as a solar eclhpise just like half or a quarter of the moon