| A | B |
|---|
| It is important to study smaller bodies such as comets or astroids because they help us | learn the history of our solar system. |
| The surface of the Earth's moon preserves a record of almost all the impacts it has had because it has | no atmosphere. |
| The astroid belt is located between the orbits of | mars and Jupiter. |
| The comets of the kuiper belt are found | outside the orbit of Neptune. |
| Phobos | is oddly shaped and may be a captured astroid. |
| Ganymede | this moon is larger than the planet mecury. |
| Io | the most volcanicallyactive body in our solar system. |
| Triton | this moon revolves around its plannet in retrograde rotation. |
