| A | B |
| identity | being oneself, and not another |
| occupants | people who live in a house or an apartment |
| arrangement | a plan or design |
| self-conscious | awkward or embarrassed in front of others |
| absorbed | taken in by or filled up with |
| lone | alone |
| convinced | talked into |
| instincts | inborn ways of behavior |
| sightings | times when a traveling object or person is seen |
| summit | highest point of a hill |
| documented | recorded as an official fact |
| internal | on the inside |
| congested | filled to excess; overcrowded |
| cue | a signal that it is time to perform a certain action |
| secluded | away from crowds |
| encroaches | slowly moves into another's territory |
| canyon | narrow valley between high cliffs |
| mesa | flattened hill with steep sides |
| remnants | traces |
| repelled | disgusted |
| acrid | bitter; stinging |
| crevices | deep, narrow cracks |
| archeologist | scientist who studies ancient places and the objects people left behind |
| petroglyphs | carvings made in rock, especially by ancienct people |
| spherical | ball shaped |
| hull | body of a ship |
| bow | front of a ship |
| stalactites | icicle-shaped deposits hanging from a cave's roof |
| porthole | round window in a ship's side to let in light and sometimes air |
| anchor | heavy object that is lowered from a vessel to keep it from drifting |
| rudder | movable piece of wood or metal that is used to steer a ship |
| stern | back of a ship |